diff --git a/.gitattributes b/.gitattributes
index 326f3cde4a8..a77840f8af2 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -50,6 +50,7 @@ README text !eol
 
 icu4c/icu4c.css -text
 icu4c/source/aclocal.m4 -text
+icu4c/source/allinone/Windows.CopyUnicodeHeaderFiles.targets -text
 icu4c/source/config/m4/icu-conditional.m4 -text
 icu4c/source/data/curr/pool.res -text
 icu4c/source/data/in/coll/ucadata-implicithan.icu -text
diff --git a/icu4c/source/allinone/Windows.CopyUnicodeHeaderFiles.targets b/icu4c/source/allinone/Windows.CopyUnicodeHeaderFiles.targets
new file mode 100644
index 00000000000..1c3db0b9d4a
--- /dev/null
+++ b/icu4c/source/allinone/Windows.CopyUnicodeHeaderFiles.targets
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2016 and later: Unicode, Inc. and others. License & terms of use: http://www.unicode.org/copyright.html -->
+<!--
+  This file is used to copy all of the header files (*.h) from a project's "unicode" folder to a common output folder.
+-->
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <!-- This is the location of the common output folder. -->
+    <CopyDestionationPath>$(SolutionDir)\..\..\include\unicode</CopyDestionationPath>
+    <BuildDependsOn>
+      $(BuildDependsOn);
+      CopyUnicodeHeaderFiles;
+    </BuildDependsOn>
+  </PropertyGroup>
+  <Target Name="CopyUnicodeHeaderFiles">
+    <ItemGroup>
+      <!-- Generate a list of all files that end in .h from the 'unicode' folder, relative to the current project. -->
+      <OutputFiles Include=".\unicode\**\*.h" />
+    </ItemGroup>
+    <!-- This message will be logged in the project's build output. -->
+    <Message Text="Copying @(OutputFiles->Count()) header files to $(CopyDestionationPath). Files copied: @(OutputFiles)" Importance="high"/>
+    <!-- Perform the copy. -->
+    <Copy SourceFiles="@(OutputFiles)" 
+          DestinationFolder="$(CopyDestionationPath)\%(RecursiveDir)"
+          SkipUnchangedFiles="false"></Copy>
+  </Target>
+</Project>
\ No newline at end of file
diff --git a/icu4c/source/allinone/allinone.sln b/icu4c/source/allinone/allinone.sln
index 0cfb6080102..2b7d9a7575f 100644
--- a/icu4c/source/allinone/allinone.sln
+++ b/icu4c/source/allinone/allinone.sln
@@ -74,8 +74,14 @@ EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "makedata_uwp", "..\data\makedata_uwp.vcxproj", "{B1D53358-37BD-48BC-B27C-68BAF1E78508}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "i18n_uwp", "..\i18n\i18n_uwp.vcxproj", "{6786C051-383B-47E0-9E82-B8B994E06A25}"
+	ProjectSection(ProjectDependencies) = postProject
+		{0178B127-6269-407D-B112-93877BB62776} = {0178B127-6269-407D-B112-93877BB62776}
+	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "common_uwp", "..\common\common_uwp.vcxproj", "{C10CF34B-3F79-430E-AD38-5A32DC0589C2}"
+	ProjectSection(ProjectDependencies) = postProject
+		{73C0A65B-D1F2-4DE1-B3A6-15DAD2C23F3D} = {73C0A65B-D1F2-4DE1-B3A6-15DAD2C23F3D}
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/icu4c/source/common/common.vcxproj b/icu4c/source/common/common.vcxproj
index 70124cd22f9..607f0d84612 100644
--- a/icu4c/source/common/common.vcxproj
+++ b/icu4c/source/common/common.vcxproj
@@ -430,86 +430,14 @@
     <ClCompile Include="utf_impl.cpp" />
     <ClCompile Include="listformatter.cpp" />
     <ClCompile Include="ulistformatter.cpp" />
-  </ItemGroup>
-  <ItemGroup>
-    <CustomBuild Include="unicode\ubidi.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="localsvc.h" />
     <ClInclude Include="msvcres.h" />
     <ClInclude Include="pluralmap.h" />
     <ClInclude Include="propname_data.h" />
     <ClInclude Include="ubidi_props.h" />
     <ClInclude Include="ubidiimp.h" />
-    <CustomBuild Include="unicode\ushape.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="brkeng.h" />
-    <CustomBuild Include="unicode\brkiter.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\dbbi.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="dictbe.h" />
-    <CustomBuild Include="unicode\rbbi.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="rbbidata.h" />
     <ClInclude Include="rbbinode.h" />
     <ClInclude Include="rbbirb.h" />
@@ -519,20 +447,6 @@
     <ClInclude Include="rbbitblb.h" />
     <ClInclude Include="rbbi_cache.h" />
     <ClInclude Include="dictionarydata.h" />
-    <CustomBuild Include="unicode\ubrk.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ubidi_props_data.h" />
     <ClInclude Include="ubrkimpl.h" />
     <ClInclude Include="ucase_props_data.h" />
@@ -543,53 +457,11 @@
     <ClInclude Include="unistrappender.h" />
     <ClInclude Include="hash.h" />
     <ClInclude Include="propsvec.h" />
-    <CustomBuild Include="unicode\strenum.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uarrsort.h" />
-    <CustomBuild Include="unicode\uenum.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uelement.h" />
     <ClInclude Include="uenumimp.h" />
     <ClInclude Include="uhash.h" />
     <ClInclude Include="ulist.h" />
-    <CustomBuild Include="unicode\enumset.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="unicode\filteredbrk.h" />
     <ClInclude Include="ustrenum.h" />
     <ClInclude Include="utrie.h" />
@@ -600,1259 +472,69 @@
     <ClInclude Include="uvectr32.h" />
     <ClInclude Include="uvectr64.h" />
     <ClInclude Include="cpputils.h" />
-    <CustomBuild Include="unicode\docmain.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\errorcode.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\icudataver.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
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-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
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     <ClInclude Include="locmap.h" />
     <ClInclude Include="mutex.h" />
-    <CustomBuild Include="unicode\platform.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
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-    <CustomBuild Include="unicode\ptypes.h">
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-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="common.rc" />
@@ -1864,6 +546,8 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <!-- The following import will copy all of the header files from this projects 'unicode' folder. -->
+  <Import Project="$(SolutionDir)\Windows.CopyUnicodeHeaderFiles.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
 </Project>
\ No newline at end of file
diff --git a/icu4c/source/common/common_uwp.vcxproj b/icu4c/source/common/common_uwp.vcxproj
index eaa8b01737e..9c2c0347e98 100644
--- a/icu4c/source/common/common_uwp.vcxproj
+++ b/icu4c/source/common/common_uwp.vcxproj
@@ -469,34 +469,14 @@
     <ClCompile Include="ulistformatter.cpp" />
   </ItemGroup>
   <ItemGroup>
-    <CustomBuild Include="unicode\ubidi.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="localsvc.h" />
     <ClInclude Include="msvcres.h" />
     <ClInclude Include="pluralmap.h" />
     <ClInclude Include="propname_data.h" />
     <ClInclude Include="ubidi_props.h" />
     <ClInclude Include="ubidiimp.h" />
-    <CustomBuild Include="unicode\ushape.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="brkeng.h" />
-    <CustomBuild Include="unicode\brkiter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\dbbi.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="dictbe.h" />
-    <CustomBuild Include="unicode\rbbi.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="rbbidata.h" />
     <ClInclude Include="rbbinode.h" />
     <ClInclude Include="rbbirb.h" />
@@ -506,10 +486,6 @@
     <ClInclude Include="rbbitblb.h" />
     <ClInclude Include="rbbi_cache.h" />
     <ClInclude Include="dictionarydata.h" />
-    <CustomBuild Include="unicode\ubrk.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ubidi_props_data.h" />
     <ClInclude Include="ubrkimpl.h" />
     <ClInclude Include="ucase_props_data.h" />
@@ -520,23 +496,11 @@
     <ClInclude Include="unistrappender.h" />
     <ClInclude Include="hash.h" />
     <ClInclude Include="propsvec.h" />
-    <CustomBuild Include="unicode\strenum.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uarrsort.h" />
-    <CustomBuild Include="unicode\uenum.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uelement.h" />
     <ClInclude Include="uenumimp.h" />
     <ClInclude Include="uhash.h" />
     <ClInclude Include="ulist.h" />
-    <CustomBuild Include="unicode\enumset.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="unicode\filteredbrk.h" />
     <ClInclude Include="ustrenum.h" />
     <ClInclude Include="utrie.h" />
@@ -547,396 +511,68 @@
     <ClInclude Include="uvectr32.h" />
     <ClInclude Include="uvectr64.h" />
     <ClInclude Include="cpputils.h" />
-    <CustomBuild Include="unicode\docmain.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\errorcode.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\icudataver.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="locmap.h" />
     <ClInclude Include="mutex.h" />
-    <CustomBuild Include="unicode\platform.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ptypes.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\putil.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="putilimp.h" />
-    <CustomBuild Include="unicode\std_string.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uassert.h" />
-    <CustomBuild Include="unicode\uconfig.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\umachine.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="umutex.h" />
     <ClInclude Include="uposixdefs.h" />
-    <CustomBuild Include="unicode\urename.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utrace.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="utracimp.h" />
-    <CustomBuild Include="unicode\utypes.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uvernum.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uversion.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="wintz.h" />
-    <CustomBuild Include="unicode\ucnv.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ucnv_bld.h" />
-    <CustomBuild Include="unicode\ucnv_cb.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ucnv_cnv.h" />
-    <CustomBuild Include="unicode\ucnv_err.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ucnv_ext.h" />
     <ClInclude Include="ucnv_imp.h" />
     <ClInclude Include="ucnv_io.h" />
     <ClInclude Include="ucnvmbcs.h" />
-    <CustomBuild Include="unicode\ucnvsel.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="cmemory.h" />
-    <CustomBuild Include="unicode\localpointer.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uclean.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ucln.h" />
     <ClInclude Include="ucln_cmn.h" />
     <ClInclude Include="ucln_imp.h" />
     <ClInclude Include="ucmndata.h" />
-    <CustomBuild Include="unicode\udata.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="udatamem.h" />
     <ClInclude Include="udataswp.h" />
     <ClInclude Include="umapfile.h" />
-    <CustomBuild Include="unicode\uobject.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\dtintrv.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\parseerr.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\parsepos.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\umisc.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ustrfmt.h" />
     <ClInclude Include="util.h" />
-    <CustomBuild Include="unicode\idna.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="punycode.h" />
-    <CustomBuild Include="unicode\uidna.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="locbased.h" />
-    <CustomBuild Include="unicode\locid.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="locutil.h" />
-    <CustomBuild Include="unicode\resbund.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="sharedobject.h" />
     <ClCompile Include="sharedobject.cpp" />
-    <CustomBuild Include="unicode\locdspnm.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\simpleformatter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ucat.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\udisplaycontext.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uldnames.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uloc.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ulocimp.h" />
-    <CustomBuild Include="unicode\ures.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="unifiedcache.h" />
     <ClInclude Include="uresdata.h" />
     <ClInclude Include="uresimp.h" />
     <ClInclude Include="ureslocs.h" />
     <ClInclude Include="resource.h" />
-    <CustomBuild Include="unicode\ucurr.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ucurrimp.h" />
-    <CustomBuild Include="unicode\caniter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="norm2allmodes.h" />
-    <CustomBuild Include="unicode\normalizer2.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="normalizer2impl.h" />
-    <CustomBuild Include="unicode\normlzr.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\unorm.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\unorm2.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="unormimp.h" />
     <ClInclude Include="bmpset.h" />
     <ClInclude Include="messageimpl.h" />
     <ClInclude Include="patternprops.h" />
     <ClInclude Include="propname.h" />
     <ClInclude Include="ruleiter.h" />
-    <CustomBuild Include="unicode\symtable.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ucase.h" />
-    <CustomBuild Include="unicode\uchar.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\unifilt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\unifunct.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\unimatch.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uniset.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="unisetspan.h" />
     <ClInclude Include="uprops.h" />
     <ClInclude Include="usc_impl.h" />
-    <CustomBuild Include="unicode\uscript.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uset.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uset_imp.h" />
-    <CustomBuild Include="unicode\usetiter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\icuplug.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="icuplugimp.h" />
     <ClInclude Include="serv.h" />
     <ClInclude Include="servloc.h" />
     <ClInclude Include="servnotf.h" />
     <ClInclude Include="sprpimpl.h" />
-    <CustomBuild Include="unicode\usprep.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\appendable.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="bytesinkutil.h" />
-    <CustomBuild Include="unicode\bytestream.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\bytestrie.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\bytestriebuilder.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\chariter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="charstr.h" />
     <ClInclude Include="cstring.h" />
     <ClInclude Include="cstr.h" />
     <ClInclude Include="cwchar.h" />
-    <CustomBuild Include="unicode\messagepattern.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\rep.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\schriter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\stringpiece.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\stringtriebuilder.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ucasemap.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ucharstrie.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ucharstriebuilder.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uchriter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uinvchar.h" />
-    <CustomBuild Include="unicode\uiter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\unistr.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\urep.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ustr_cnv.h" />
     <ClInclude Include="ustr_imp.h" />
-    <CustomBuild Include="unicode\ustring.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ustringtrie.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utext.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utf.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utf16.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utf32.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utf8.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
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index 837f8c74122..59782692c07 100644
--- a/icu4c/source/i18n/i18n.vcxproj
+++ b/icu4c/source/i18n/i18n.vcxproj
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-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="anytrans.h" />
     <ClInclude Include="brktrans.h" />
     <ClInclude Include="casetrn.h" />
@@ -1625,52 +611,10 @@
     <ClInclude Include="titletrn.h" />
     <ClInclude Include="tolowtrn.h" />
     <ClInclude Include="toupptrn.h" />
-    <CustomBuild Include="unicode\translit.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="transreg.h" />
     <ClInclude Include="tridpars.h" />
     <ClInclude Include="unesctrn.h" />
     <ClInclude Include="uni2name.h" />
-    <CustomBuild Include="unicode\unirepl.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utrans.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="csdetect.h" />
     <ClInclude Include="csmatch.h" />
     <ClInclude Include="csr2022.h" />
@@ -1680,34 +624,6 @@
     <ClInclude Include="csrucode.h" />
     <ClInclude Include="csrutf8.h" />
     <ClInclude Include="inputext.h" />
-    <CustomBuild Include="unicode\ucsdet.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uspoof.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="scriptset.h" />
     <ClInclude Include="uspoof_conf.h" />
     <ClInclude Include="uspoof_impl.h" />
@@ -1725,14 +641,6 @@
     <ClInclude Include="number_stringbuilder.h" />
     <ClInclude Include="number_types.h" />
     <ClInclude Include="number_utils.h" />
-    <CustomBuild Include="unicode\nounit.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode </Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\numberformatter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode </Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="i18n.rc" />
@@ -1744,6 +652,8 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <!-- The following import will copy all of the header files from this projects 'unicode' folder. -->
+  <Import Project="$(SolutionDir)\Windows.CopyUnicodeHeaderFiles.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
 </Project>
\ No newline at end of file
diff --git a/icu4c/source/i18n/i18n_uwp.vcxproj b/icu4c/source/i18n/i18n_uwp.vcxproj
index 1dbd4d0ce84..09374dfc5dc 100644
--- a/icu4c/source/i18n/i18n_uwp.vcxproj
+++ b/icu4c/source/i18n/i18n_uwp.vcxproj
@@ -496,47 +496,7 @@
     <ClCompile Include="uspoof_impl.cpp" />
   </ItemGroup>
   <ItemGroup>
-    <CustomBuild Include="unicode\alphaindex.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="bocsu.h" />
-    <CustomBuild Include="unicode\coleitr.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\coll.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\search.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\sortkey.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\stsearch.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tblcoll.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ucol.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="affixpatternparser.h" />
     <ClInclude Include="decimalformatpatternimpl.h" />
     <ClInclude Include="decimfmtimpl.h" />
@@ -578,96 +538,18 @@
     <ClInclude Include="tzgnames.h" />
     <ClInclude Include="tznames_impl.h" />
     <ClInclude Include="ucol_imp.h" />
-    <CustomBuild Include="unicode\ucoleitr.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\usearch.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tzfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tznames.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="uitercollationiterator.h" />
-    <CustomBuild Include="unicode\region.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uregion.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="usrchimp.h" />
     <ClInclude Include="astro.h" />
-    <CustomBuild Include="unicode\basictz.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="buddhcal.h" />
-    <CustomBuild Include="unicode\calendar.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="cecal.h" />
     <ClInclude Include="chnsecal.h" />
-    <CustomBuild Include="unicode\choicfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\compactdecimalformat.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="coptccal.h" />
-    <CustomBuild Include="unicode\curramt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="currfmt.h" />
-    <CustomBuild Include="unicode\currpinf.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\currunit.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="dangical.h" />
-    <CustomBuild Include="unicode\datefmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\dcfmtsym.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="decContext.h" />
     <ClInclude Include="decfmtst.h" />
     <ClInclude Include="decimalformatpattern.h" />
-    <CustomBuild Include="unicode\decimfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="decNumber.h" />
     <ClInclude Include="decNumberLocal.h" />
     <ClInclude Include="digitlst.h" />
@@ -680,127 +562,22 @@
     <ClInclude Include="double-conversion-utils.h" />
     <ClInclude Include="double-conversion.h" />
     <ClInclude Include="dt_impl.h" />
-    <CustomBuild Include="unicode\dtfmtsym.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="dtitv_impl.h" />
-    <CustomBuild Include="unicode\dtitvfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\dtitvinf.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\dtptngen.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="dtptngen_impl.h" />
-    <CustomBuild Include="unicode\dtrule.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="ethpccal.h" />
-    <CustomBuild Include="unicode\fieldpos.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\fmtable.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uformattable.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\format.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="fphdlimp.h" />
-    <CustomBuild Include="unicode\fpositer.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\gender.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ugender.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\gregocal.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="gregoimp.h" />
     <ClInclude Include="hebrwcal.h" />
     <ClInclude Include="indiancal.h" />
     <ClInclude Include="islamcal.h" />
     <ClInclude Include="japancal.h" />
-    <CustomBuild Include="unicode\measfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\measunit.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\measure.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\msgfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="msgfmt_impl.h" />
     <ClInclude Include="nfrlist.h" />
     <ClInclude Include="nfrs.h" />
     <ClInclude Include="nfrule.h" />
     <ClInclude Include="nfsubs.h" />
-    <CustomBuild Include="unicode\numfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\numsys.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="olsontz.h" />
     <ClInclude Include="persncal.h" />
-    <CustomBuild Include="unicode\plurfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\plurrule.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="plurrule_impl.h" />
     <ClInclude Include="quantityformatter.h" />
     <ClInclude Include="sharedbreakiterator.h" />
@@ -808,141 +585,11 @@
     <ClInclude Include="shareddateformatsymbols.h" />
     <ClInclude Include="sharednumberformat.h" />
     <ClInclude Include="sharedpluralrules.h" />
-    <CustomBuild Include="unicode\rbnf.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\rbtz.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\reldatefmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="reldtfmt.h" />
-    <CustomBuild Include="unicode\scientificnumberformatter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\selfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\simpletz.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\smpdtfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="smpdtfst.h" />
     <ClInclude Include="standardplural.h" />
     <ClInclude Include="taiwncal.h" />
-    <CustomBuild Include="unicode\timezone.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tmunit.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tmutamt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tmutfmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tzrule.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\tztrans.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ucal.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\udat.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\udateintervalformat.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\udatpg.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ufieldpositer.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ulocdata.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\umsg.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="umsg_imp.h" />
-    <CustomBuild Include="unicode\unum.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\unumsys.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\upluralrules.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ureldatefmt.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utmscale.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\vtzone.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="utf16collationiterator.h" />
     <ClInclude Include="utf8collationiterator.h" />
     <ClInclude Include="vzone.h" />
@@ -953,21 +600,11 @@
     <ClInclude Include="zrule.h" />
     <ClInclude Include="ztrans.h" />
     <ClInclude Include="ucln_in.h" />
-    <CustomBuild Include="unicode\regex.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="regexcmp.h" />
     <ClInclude Include="regexcst.h" />
     <ClInclude Include="regeximp.h" />
     <ClInclude Include="regexst.h" />
     <ClInclude Include="regextxt.h" />
-    <CustomBuild Include="unicode\uregex.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="anytrans.h" />
     <ClInclude Include="brktrans.h" />
     <ClInclude Include="casetrn.h" />
@@ -989,25 +626,10 @@
     <ClInclude Include="titletrn.h" />
     <ClInclude Include="tolowtrn.h" />
     <ClInclude Include="toupptrn.h" />
-    <CustomBuild Include="unicode\translit.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="transreg.h" />
     <ClInclude Include="tridpars.h" />
     <ClInclude Include="unesctrn.h" />
     <ClInclude Include="uni2name.h" />
-    <CustomBuild Include="unicode\unirepl.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\utrans.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="csdetect.h" />
     <ClInclude Include="csmatch.h" />
     <ClInclude Include="csr2022.h" />
@@ -1017,16 +639,6 @@
     <ClInclude Include="csrucode.h" />
     <ClInclude Include="csrutf8.h" />
     <ClInclude Include="inputext.h" />
-    <CustomBuild Include="unicode\ucsdet.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\uspoof.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
     <ClInclude Include="scriptset.h" />
     <ClInclude Include="uspoof_conf.h" />
     <ClInclude Include="uspoof_impl.h" />
@@ -1044,14 +656,6 @@
     <ClInclude Include="number_stringbuilder.h" />
     <ClInclude Include="number_types.h" />
     <ClInclude Include="number_utils.h" />
-    <CustomBuild Include="unicode\nounit.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode </Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\numberformatter.h">
-      <Command>copy "%(FullPath)" ..\..\include\unicode </Command>
-      <Outputs>..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="i18n.rc" />
diff --git a/icu4c/source/io/io.vcxproj b/icu4c/source/io/io.vcxproj
index 78535f8faf9..17064409576 100644
--- a/icu4c/source/io/io.vcxproj
+++ b/icu4c/source/io/io.vcxproj
@@ -284,34 +284,6 @@
     <ClInclude Include="ufmt_cmn.h" />
     <ClInclude Include="uprintf.h" />
     <ClInclude Include="uscanf.h" />
-    <CustomBuild Include="unicode\ustdio.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
-    <CustomBuild Include="unicode\ustream.h">
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">copy "%(FullPath)" ..\..\include\unicode
-</Command>
-      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\include\unicode\%(Filename)%(Extension);%(Outputs)</Outputs>
-    </CustomBuild>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="io.rc" />
@@ -327,6 +299,8 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <!-- The following import will copy all of the header files from this projects 'unicode' folder. -->
+  <Import Project="$(SolutionDir)\Windows.CopyUnicodeHeaderFiles.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
 </Project>
\ No newline at end of file
diff --git a/icu4c/source/samples/all/all.sln b/icu4c/source/samples/all/all.sln
index 503243ebf52..ca156539e0b 100644
--- a/icu4c/source/samples/all/all.sln
+++ b/icu4c/source/samples/all/all.sln
@@ -12,8 +12,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "date", "..\date\date.vcxpro
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "datefmt", "..\datefmt\datefmt.vcxproj", "{6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "layout", "..\layout\layout.vcxproj", "{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}"
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "legacy", "..\legacy\legacy.vcxproj", "{57F56795-1802-4605-88A0-013AAE9998F6}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "msgfmt", "..\msgfmt\msgfmt.vcxproj", "{5FF1D1A2-1630-446C-B6EA-93EFD4F975C3}"
@@ -104,14 +102,6 @@ Global
 		{6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Release|Win32.Build.0 = Release|Win32
 		{6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Release|x64.ActiveCfg = Release|x64
 		{6D592DB7-B9C8-4B1B-A1C1-F9A9EB4FD4E4}.Release|x64.Build.0 = Release|x64
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Debug|Win32.ActiveCfg = Debug|Win32
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Debug|Win32.Build.0 = Debug|Win32
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Debug|x64.ActiveCfg = Debug|x64
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Debug|x64.Build.0 = Debug|x64
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Release|Win32.ActiveCfg = Release|Win32
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Release|Win32.Build.0 = Release|Win32
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Release|x64.ActiveCfg = Release|x64
-		{497500ED-DE1D-4B20-B529-F41B5A0FBEEB}.Release|x64.Build.0 = Release|x64
 		{57F56795-1802-4605-88A0-013AAE9998F6}.Debug|Win32.ActiveCfg = Debug|Win32
 		{57F56795-1802-4605-88A0-013AAE9998F6}.Debug|Win32.Build.0 = Debug|Win32
 		{57F56795-1802-4605-88A0-013AAE9998F6}.Debug|x64.ActiveCfg = Debug|x64