diff --git a/icu4c/source/common/common.vcxproj b/icu4c/source/common/common.vcxproj
index 254d57e1cf..aa589d6542 100644
--- a/icu4c/source/common/common.vcxproj
+++ b/icu4c/source/common/common.vcxproj
@@ -253,35 +253,22 @@
     <ClCompile Include="ubidiwrt.cpp" />
     <ClCompile Include="uloc_keytype.cpp" />
     <ClCompile Include="ushape.cpp" />
-    <ClCompile Include="brkeng.cpp">
-    </ClCompile>
-    <ClCompile Include="brkiter.cpp">
-    </ClCompile>
+    <ClCompile Include="brkeng.cpp" />
+    <ClCompile Include="brkiter.cpp" />
     <ClCompile Include="dictbe.cpp" />
     <ClCompile Include="pluralmap.cpp" />
-    <ClCompile Include="rbbi.cpp">
-    </ClCompile>
-    <ClCompile Include="rbbidata.cpp">
-    </ClCompile>
+    <ClCompile Include="rbbi.cpp" />
+    <ClCompile Include="rbbidata.cpp" />
     <ClCompile Include="rbbinode.cpp" />
-    <ClCompile Include="rbbirb.cpp">
-    </ClCompile>
+    <ClCompile Include="rbbirb.cpp" />
     <ClCompile Include="rbbiscan.cpp" />
     <ClCompile Include="rbbisetb.cpp" />
-    <ClCompile Include="rbbistbl.cpp">
-    </ClCompile>
-    <ClCompile Include="rbbitblb.cpp">
-    </ClCompile>
-    <ClCompile Include="rbbi_cache.cpp">
-    </ClCompile>
+    <ClCompile Include="rbbistbl.cpp" />
+    <ClCompile Include="rbbitblb.cpp" />
+    <ClCompile Include="rbbi_cache.cpp" />
     <ClCompile Include="dictionarydata.cpp" />
     <ClCompile Include="ubrk.cpp" />
-    <ClCompile Include="ucol_swp.cpp">
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\i18n;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\i18n;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\i18n;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\i18n;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-    </ClCompile>
+    <ClCompile Include="ucol_swp.cpp" />
     <ClCompile Include="propsvec.cpp" />
     <ClCompile Include="uarrsort.cpp" />
     <ClCompile Include="uenum.cpp" />
@@ -298,44 +285,22 @@
     <ClCompile Include="uvectr64.cpp" />
     <ClCompile Include="errorcode.cpp" />
     <ClCompile Include="icudataver.cpp" />
-    <ClCompile Include="locmap.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
-    <ClCompile Include="putil.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="locmap.cpp" />
+    <ClCompile Include="putil.cpp" />
     <ClCompile Include="umath.cpp" />
-    <ClCompile Include="umutex.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="umutex.cpp" />
     <ClCompile Include="utrace.cpp" />
     <ClCompile Include="utypes.cpp" />
-    <ClCompile Include="wintz.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="wintz.cpp" />
     <ClCompile Include="ucnv.cpp" />
     <ClCompile Include="ucnv2022.cpp" />
-    <ClCompile Include="ucnv_bld.cpp">
-    </ClCompile>
+    <ClCompile Include="ucnv_bld.cpp" />
     <ClCompile Include="ucnv_cb.cpp" />
     <ClCompile Include="ucnv_cnv.cpp" />
     <ClCompile Include="ucnv_ct.cpp" />
     <ClCompile Include="ucnv_err.cpp" />
     <ClCompile Include="ucnv_ext.cpp" />
-    <ClCompile Include="ucnv_io.cpp">
-    </ClCompile>
+    <ClCompile Include="ucnv_io.cpp" />
     <ClCompile Include="ucnv_lmb.cpp" />
     <ClCompile Include="ucnv_set.cpp" />
     <ClCompile Include="ucnv_u16.cpp" />
@@ -349,25 +314,15 @@
     <ClCompile Include="ucnvlat1.cpp" />
     <ClCompile Include="ucnvmbcs.cpp" />
     <ClCompile Include="ucnvscsu.cpp" />
-    <ClCompile Include="ucnvsel.cpp">
-    </ClCompile>
+    <ClCompile Include="ucnvsel.cpp" />
     <ClCompile Include="cmemory.cpp" />
-    <ClCompile Include="ucln_cmn.cpp">
-      <DisableLanguageExtensions>false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="ucln_cmn.cpp" />
     <ClCompile Include="ucmndata.cpp" />
     <ClCompile Include="udata.cpp" />
     <ClCompile Include="udatamem.cpp" />
     <ClCompile Include="udataswp.cpp" />
-    <ClCompile Include="uinit.cpp">
-      <DisableLanguageExtensions>false</DisableLanguageExtensions>
-    </ClCompile>
-    <ClCompile Include="umapfile.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="uinit.cpp" />
+    <ClCompile Include="umapfile.cpp" />
     <ClCompile Include="uobject.cpp" />
     <ClCompile Include="dtintrv.cpp" />
     <ClCompile Include="parsepos.cpp" />
@@ -377,19 +332,15 @@
     <ClCompile Include="punycode.cpp" />
     <ClCompile Include="uidna.cpp" />
     <ClCompile Include="uts46.cpp" />
-    <ClCompile Include="locavailable.cpp">
-    </ClCompile>
+    <ClCompile Include="locavailable.cpp" />
     <ClCompile Include="locbased.cpp" />
     <ClCompile Include="locdispnames.cpp" />
     <ClCompile Include="locdspnm.cpp" />
-    <ClCompile Include="locid.cpp">
-    </ClCompile>
+    <ClCompile Include="locid.cpp" />
     <ClCompile Include="loclikely.cpp" />
     <ClCompile Include="locresdata.cpp" />
-    <ClCompile Include="locutil.cpp">
-    </ClCompile>
-    <ClCompile Include="resbund.cpp">
-    </ClCompile>
+    <ClCompile Include="locutil.cpp" />
+    <ClCompile Include="resbund.cpp" />
     <ClCompile Include="resbund_cnv.cpp" />
     <ClCompile Include="ucat.cpp" />
     <ClCompile Include="uloc.cpp" />
@@ -399,28 +350,22 @@
     <ClCompile Include="uresdata.cpp" />
     <ClCompile Include="resource.cpp" />
     <ClCompile Include="ucurr.cpp" />
-    <ClCompile Include="caniter.cpp">
-    </ClCompile>
+    <ClCompile Include="caniter.cpp" />
     <ClCompile Include="filterednormalizer2.cpp" />
     <ClCompile Include="loadednormalizer2impl.cpp" />
     <ClCompile Include="normalizer2.cpp" />
     <ClCompile Include="normalizer2impl.cpp" />
-    <ClCompile Include="normlzr.cpp">
-    </ClCompile>
+    <ClCompile Include="normlzr.cpp" />
     <ClCompile Include="unorm.cpp" />
     <ClCompile Include="unormcmp.cpp" />
     <ClCompile Include="bmpset.cpp" />
     <ClCompile Include="patternprops.cpp" />
-    <ClCompile Include="propname.cpp">
-    </ClCompile>
+    <ClCompile Include="propname.cpp" />
     <ClCompile Include="ruleiter.cpp" />
-    <ClCompile Include="ucase.cpp">
-    </ClCompile>
+    <ClCompile Include="ucase.cpp" />
     <ClCompile Include="uchar.cpp" />
     <ClCompile Include="unames.cpp" />
-    <ClCompile Include="unifiedcache.cpp">
-      <DisableLanguageExtensions>false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="unifiedcache.cpp" />
     <ClCompile Include="unifilt.cpp" />
     <ClCompile Include="unifunct.cpp" />
     <ClCompile Include="uniset.cpp" />
@@ -435,20 +380,13 @@
     <ClCompile Include="uset_props.cpp" />
     <ClCompile Include="usetiter.cpp" />
     <ClCompile Include="icuplug.cpp" />
-    <ClCompile Include="serv.cpp">
-    </ClCompile>
-    <ClCompile Include="servlk.cpp">
-    </ClCompile>
-    <ClCompile Include="servlkf.cpp">
-    </ClCompile>
-    <ClCompile Include="servls.cpp">
-    </ClCompile>
-    <ClCompile Include="servnotf.cpp">
-    </ClCompile>
-    <ClCompile Include="servrbf.cpp">
-    </ClCompile>
-    <ClCompile Include="servslkf.cpp">
-    </ClCompile>
+    <ClCompile Include="serv.cpp" />
+    <ClCompile Include="servlk.cpp" />
+    <ClCompile Include="servlkf.cpp" />
+    <ClCompile Include="servls.cpp" />
+    <ClCompile Include="servnotf.cpp" />
+    <ClCompile Include="servrbf.cpp" />
+    <ClCompile Include="servslkf.cpp" />
     <ClCompile Include="usprep.cpp" />
     <ClCompile Include="appendable.cpp" />
     <ClCompile Include="bytesinkutil.cpp" />
diff --git a/icu4c/source/common/common_uwp.vcxproj b/icu4c/source/common/common_uwp.vcxproj
index 596ebf7fb1..ae0b90b2f5 100644
--- a/icu4c/source/common/common_uwp.vcxproj
+++ b/icu4c/source/common/common_uwp.vcxproj
@@ -302,9 +302,7 @@
     <ClCompile Include="rbbi_cache.cpp" />
     <ClCompile Include="dictionarydata.cpp" />
     <ClCompile Include="ubrk.cpp" />
-    <ClCompile Include="ucol_swp.cpp">
-      <AdditionalIncludeDirectories>..\i18n;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-    </ClCompile>
+    <ClCompile Include="ucol_swp.cpp" />
     <ClCompile Include="propsvec.cpp" />
     <ClCompile Include="uarrsort.cpp" />
     <ClCompile Include="uenum.cpp" />
diff --git a/icu4c/source/i18n/i18n.vcxproj b/icu4c/source/i18n/i18n.vcxproj
index d496b18d07..9e310018c8 100644
--- a/icu4c/source/i18n/i18n.vcxproj
+++ b/icu4c/source/i18n/i18n.vcxproj
@@ -423,30 +423,13 @@
     <ClCompile Include="utmscale.cpp" />
     <ClCompile Include="vtzone.cpp" />
     <ClCompile Include="vzone.cpp" />
-    <ClCompile Include="windtfmt.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
-    <ClCompile Include="winnmfmt.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
-    <ClCompile Include="wintzimpl.cpp">
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</DisableLanguageExtensions>
-      <DisableLanguageExtensions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="windtfmt.cpp" />
+    <ClCompile Include="winnmfmt.cpp" />
+    <ClCompile Include="wintzimpl.cpp" />
     <ClCompile Include="zonemeta.cpp" />
     <ClCompile Include="zrule.cpp" />
     <ClCompile Include="ztrans.cpp" />
-    <ClCompile Include="ucln_in.cpp">
-      <DisableLanguageExtensions>false</DisableLanguageExtensions>
-    </ClCompile>
+    <ClCompile Include="ucln_in.cpp" />
     <ClCompile Include="regexcmp.cpp" />
     <ClCompile Include="regeximp.cpp" />
     <ClCompile Include="regexst.cpp" />
diff --git a/icu4c/source/tools/gennorm2/gennorm2.vcxproj b/icu4c/source/tools/gennorm2/gennorm2.vcxproj
index b3e95c9405..d02bdda34e 100644
--- a/icu4c/source/tools/gennorm2/gennorm2.vcxproj
+++ b/icu4c/source/tools/gennorm2/gennorm2.vcxproj
@@ -133,7 +133,6 @@
       <AdditionalIncludeDirectories>..\..\common;..\toolutil;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WINVER=0x0601;_WIN32_WINNT=0x0601;WIN32;_DEBUG;_CRT_SECURE_NO_DEPRECATE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <StringPooling>true</StringPooling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -222,7 +221,6 @@
       <AdditionalIncludeDirectories>..\..\common;..\toolutil;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WINVER=0x0601;_WIN32_WINNT=0x0601;WIN64;WIN32;_DEBUG;_CRT_SECURE_NO_DEPRECATE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <StringPooling>true</StringPooling>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>