diff --git a/sys/windows/Makefile.nmake b/sys/windows/Makefile.nmake
index f4be7a51c..260bb9939 100644
--- a/sys/windows/Makefile.nmake
+++ b/sys/windows/Makefile.nmake
@@ -8,8 +8,8 @@
 #       MS Visual Studio Visual C++ compiler
 #
 #       Visual Studio Compilers Tested:
-#            - Microsoft Visual Studio Community 2022 v 17.14.30
-#            - Microsoft Visual Studio Community 2026 v 18.5.0
+#            - Microsoft Visual Studio Community 2022 v 17.14.31
+#            - Microsoft Visual Studio Community 2026 v 18.5.2
 #
 #==============================================================================
 #   This is used for building two distinct executables of NetHack:
@@ -1188,7 +1188,7 @@ rc=Rc.exe
 #
 # Recently tested versions:
 TESTEDVS2022 = 14.44.35225.0
-TESTEDVS2026 = 14.50.35729.0
+TESTEDVS2026 = 14.50.35730.0
 
 VS20261ST = 1450000000
 VS2026CUR = $(TESTEDVS2026:.=)
diff --git a/sys/windows/vs/NetHack/NetHack.vcxproj b/sys/windows/vs/NetHack/NetHack.vcxproj
index fc2604af1..1d29c4f80 100644
--- a/sys/windows/vs/NetHack/NetHack.vcxproj
+++ b/sys/windows/vs/NetHack/NetHack.vcxproj
@@ -3,6 +3,9 @@
   <Import Project="..\config.props" />
   <Import Project="..\dirs.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <Import Project="..\NetHackProperties.props" />
@@ -329,4 +332,4 @@
   <Target Name="AfterRebuild">
     <MSBuild Projects="afternethack.proj" Targets="Build" Properties="Configuration=$(Configuration)" />
   </Target>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/sys/windows/vs/NetHackW/NetHackW.vcxproj b/sys/windows/vs/NetHackW/NetHackW.vcxproj
index 6b7ecc097..df2507e81 100644
--- a/sys/windows/vs/NetHackW/NetHackW.vcxproj
+++ b/sys/windows/vs/NetHackW/NetHackW.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\dirs.props" />
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
@@ -406,4 +409,4 @@
   <Target Name="AfterRebuild">
     <MSBuild Projects="$(vsDir)NetHack\afternethack.proj" Targets="Build" Properties="Configuration=$(Configuration)" />
   </Target>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/sys/windows/vs/PDCurses/PDCurses.vcxproj b/sys/windows/vs/PDCurses/PDCurses.vcxproj
index 10f9712ec..e849ca497 100644
--- a/sys/windows/vs/PDCurses/PDCurses.vcxproj
+++ b/sys/windows/vs/PDCurses/PDCurses.vcxproj
@@ -35,6 +35,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default_lib.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ItemGroup>
diff --git a/sys/windows/vs/PDCursesGui/pdcursesgui.vcxproj b/sys/windows/vs/PDCursesGui/pdcursesgui.vcxproj
index e709ade6d..fef23ab69 100644
--- a/sys/windows/vs/PDCursesGui/pdcursesgui.vcxproj
+++ b/sys/windows/vs/PDCursesGui/pdcursesgui.vcxproj
@@ -35,6 +35,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default_lib.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ItemGroup>
diff --git a/sys/windows/vs/dlb/dlb.vcxproj b/sys/windows/vs/dlb/dlb.vcxproj
index 44a1dad6a..a0a29af68 100644
--- a/sys/windows/vs/dlb/dlb.vcxproj
+++ b/sys/windows/vs/dlb/dlb.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
diff --git a/sys/windows/vs/hacklib/hacklib.vcxproj b/sys/windows/vs/hacklib/hacklib.vcxproj
index 3c7241496..c6921c542 100644
--- a/sys/windows/vs/hacklib/hacklib.vcxproj
+++ b/sys/windows/vs/hacklib/hacklib.vcxproj
@@ -75,7 +75,7 @@
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
@@ -87,7 +87,7 @@
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
@@ -230,4 +230,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/sys/windows/vs/lualib/lualib.vcxproj b/sys/windows/vs/lualib/lualib.vcxproj
index 0849b2893..9b8bb3667 100644
--- a/sys/windows/vs/lualib/lualib.vcxproj
+++ b/sys/windows/vs/lualib/lualib.vcxproj
@@ -90,22 +90,22 @@
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
-    <PlatformToolset>v145</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -239,4 +239,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/sys/windows/vs/makedefs/makedefs.vcxproj b/sys/windows/vs/makedefs/makedefs.vcxproj
index b832056f9..cced77ffd 100644
--- a/sys/windows/vs/makedefs/makedefs.vcxproj
+++ b/sys/windows/vs/makedefs/makedefs.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
diff --git a/sys/windows/vs/nhlua_h/nhlua_h.vcxproj b/sys/windows/vs/nhlua_h/nhlua_h.vcxproj
index 842f541d8..2f8f14f28 100644
--- a/sys/windows/vs/nhlua_h/nhlua_h.vcxproj
+++ b/sys/windows/vs/nhlua_h/nhlua_h.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">
@@ -50,10 +53,11 @@
     <Exec Command="echo #include %22lualib.h%22 &gt;&gt; nhlua.h" WorkingDirectory="$(IncDir)" />
     <Exec Command="echo #include %22lauxlib.h%22 &gt;&gt; nhlua.h" WorkingDirectory="$(IncDir)" />
     <Exec Command="echo /*nhlua.h*/ &gt;&gt; nhlua.h" WorkingDirectory="$(IncDir)" />
-  </Target>  <Target Name="AfterBuild">
+  </Target>
+  <Target Name="AfterBuild">
   </Target>
   <Target Name="AfterClean">
   </Target>
   <Target Name="AfterRebuild">
   </Target>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/sys/windows/vs/recover/recover.vcxproj b/sys/windows/vs/recover/recover.vcxproj
index 1fe6f0a16..a15b4c17b 100644
--- a/sys/windows/vs/recover/recover.vcxproj
+++ b/sys/windows/vs/recover/recover.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <Import Project="..\NetHackProperties.props" />
diff --git a/sys/windows/vs/sfctool/sfctool.vcxproj b/sys/windows/vs/sfctool/sfctool.vcxproj
index ad1971969..c6485a0e6 100644
--- a/sys/windows/vs/sfctool/sfctool.vcxproj
+++ b/sys/windows/vs/sfctool/sfctool.vcxproj
@@ -87,39 +87,39 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
diff --git a/sys/windows/vs/sftags/sftags.vcxproj b/sys/windows/vs/sftags/sftags.vcxproj
index 52c63d47a..fb1aa0c66 100644
--- a/sys/windows/vs/sftags/sftags.vcxproj
+++ b/sys/windows/vs/sftags/sftags.vcxproj
@@ -47,39 +47,39 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
diff --git a/sys/windows/vs/tile2bmp/tile2bmp.vcxproj b/sys/windows/vs/tile2bmp/tile2bmp.vcxproj
index 6ed724f2b..0c94bf9f7 100644
--- a/sys/windows/vs/tile2bmp/tile2bmp.vcxproj
+++ b/sys/windows/vs/tile2bmp/tile2bmp.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
diff --git a/sys/windows/vs/tilemap/tilemap.vcxproj b/sys/windows/vs/tilemap/tilemap.vcxproj
index 70ce0296b..a21a17a72 100644
--- a/sys/windows/vs/tilemap/tilemap.vcxproj
+++ b/sys/windows/vs/tilemap/tilemap.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
diff --git a/sys/windows/vs/tiles/tiles.vcxproj b/sys/windows/vs/tiles/tiles.vcxproj
index e6b52ad78..4481d9b81 100644
--- a/sys/windows/vs/tiles/tiles.vcxproj
+++ b/sys/windows/vs/tiles/tiles.vcxproj
@@ -26,22 +26,22 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Makefile</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <PlatformToolset>v120</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Makefile</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <PlatformToolset>v120</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Makefile</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <PlatformToolset>v120</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Makefile</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <PlatformToolset>v120</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
diff --git a/sys/windows/vs/uudecode/uudecode.vcxproj b/sys/windows/vs/uudecode/uudecode.vcxproj
index 296d97ab8..e1eba7dc8 100644
--- a/sys/windows/vs/uudecode/uudecode.vcxproj
+++ b/sys/windows/vs/uudecode/uudecode.vcxproj
@@ -33,6 +33,9 @@
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <VCToolsVersion />
+  </PropertyGroup>
   <Import Project="..\default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">