diff --git a/contrib/win32/openssh/BinSkimConfig.xml b/contrib/win32/openssh/BinSkimConfig.xml
index 90bf3aa43..91ce27497 100644
--- a/contrib/win32/openssh/BinSkimConfig.xml
+++ b/contrib/win32/openssh/BinSkimConfig.xml
@@ -40,7 +40,7 @@
     <Property Key="AdvancedMitigationsEnforced" Value="None" Type="AdvancedMitigations" />
     <Properties Key="AllowedLibraries" Type="IL.Rules.StringToVersionMap" />
     <Properties Key="MinimumToolVersions" Type="IL.Rules.StringToVersionMap">
-      <Property Key="MinimumCompilerVersion" Value="17.0.65501.17013" Type="System.Version" />
+      <Property Key="C" Value="17.0.65501.17013" Type="System.Version" />
       <Property Key="MinimumXboxCompilerVersion" Value="16.0.11886.0" Type="System.Version" />
     </Properties>
     <Property Key="RuleEnabled" Value="Default" Type="Driver.RuleEnabledState" />
diff --git a/contrib/win32/openssh/keygen.vcxproj b/contrib/win32/openssh/keygen.vcxproj
index a4b06e459..5ba9b28d0 100644
--- a/contrib/win32/openssh/keygen.vcxproj
+++ b/contrib/win32/openssh/keygen.vcxproj
@@ -185,7 +185,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -211,7 +211,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -237,7 +237,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -263,7 +263,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -290,7 +290,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(OpenSSH-Src-Path)includes;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path)libkrb;$(OpenSSH-Src-Path)libkrb\libKrb5;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -320,7 +320,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(OpenSSH-Src-Path)includes;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path)libkrb;$(OpenSSH-Src-Path)libkrb\libKrb5;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -350,7 +350,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(OpenSSH-Src-Path)includes;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path)libkrb;$(OpenSSH-Src-Path)libkrb\libKrb5;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -380,7 +380,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(OpenSSH-Src-Path)includes;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path)libkrb;$(OpenSSH-Src-Path)libkrb\libKrb5;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/contrib/win32/openssh/libssh.vcxproj b/contrib/win32/openssh/libssh.vcxproj
index d75e24e63..a0e1848ea 100644
--- a/contrib/win32/openssh/libssh.vcxproj
+++ b/contrib/win32/openssh/libssh.vcxproj
@@ -177,7 +177,7 @@
       <CompileAs>CompileAsC</CompileAs>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -197,7 +197,7 @@
       <CompileAs>CompileAsC</CompileAs>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -217,7 +217,7 @@
       <CompileAs>CompileAsC</CompileAs>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -240,7 +240,7 @@
       <CompileAs>CompileAsC</CompileAs>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -262,7 +262,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(ZLib-Path);$(OpenSSH-Src-Path)includes;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path)libkrb;$(OpenSSH-Src-Path)libkrb\libKrb5;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -284,7 +284,7 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <WholeProgramOptimization>true</WholeProgramOptimization>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -306,7 +306,7 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <WholeProgramOptimization>true</WholeProgramOptimization>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -331,7 +331,7 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <WholeProgramOptimization>true</WholeProgramOptimization>
       <ControlFlowGuard>false</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
diff --git a/contrib/win32/openssh/openbsd_compat.vcxproj b/contrib/win32/openssh/openbsd_compat.vcxproj
index ef642da2c..10fa853b9 100644
--- a/contrib/win32/openssh/openbsd_compat.vcxproj
+++ b/contrib/win32/openssh/openbsd_compat.vcxproj
@@ -276,7 +276,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -294,7 +294,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -312,7 +312,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -333,7 +333,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -355,7 +355,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)openbsd-compat;$(OpenSSH-Src-Path)libkrb;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -377,7 +377,7 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <WholeProgramOptimization>true</WholeProgramOptimization>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -399,7 +399,7 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <WholeProgramOptimization>true</WholeProgramOptimization>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -424,7 +424,7 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <WholeProgramOptimization>true</WholeProgramOptimization>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
diff --git a/contrib/win32/openssh/scp.vcxproj b/contrib/win32/openssh/scp.vcxproj
index 43b561de6..37cdf369e 100644
--- a/contrib/win32/openssh/scp.vcxproj
+++ b/contrib/win32/openssh/scp.vcxproj
@@ -193,7 +193,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -219,7 +219,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -245,7 +245,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -271,7 +271,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -298,7 +298,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(OpenSSH-Src-Path)includes;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path)libkrb;$(OpenSSH-Src-Path)libkrb\libKrb5;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -328,7 +328,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir);$(LibreSSL-Path)include;$(OpenSSH-Src-Path)includes;$(OpenSSH-Src-Path);$(OpenSSH-Src-Path)contrib\win32\win32compat;$(OpenSSH-Src-Path)libkrb;$(OpenSSH-Src-Path)libkrb\libKrb5;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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     <Link>
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@@ -358,7 +358,7 @@
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       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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     <Link>
       <SubSystem>Console</SubSystem>
@@ -388,7 +388,7 @@
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       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/contrib/win32/openssh/sftp-server.vcxproj b/contrib/win32/openssh/sftp-server.vcxproj
index 720fa62e1..47cd67d0f 100644
--- a/contrib/win32/openssh/sftp-server.vcxproj
+++ b/contrib/win32/openssh/sftp-server.vcxproj
@@ -194,7 +194,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -220,7 +220,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
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@@ -246,7 +246,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
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@@ -272,7 +272,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -299,7 +299,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -329,7 +329,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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     <Link>
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@@ -359,7 +359,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -389,7 +389,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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     <Link>
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diff --git a/contrib/win32/openssh/sftp.vcxproj b/contrib/win32/openssh/sftp.vcxproj
index 9a570e7bf..7dd4c71de 100644
--- a/contrib/win32/openssh/sftp.vcxproj
+++ b/contrib/win32/openssh/sftp.vcxproj
@@ -197,7 +197,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
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+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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     <Link>
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@@ -223,7 +223,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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     <Link>
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@@ -249,7 +249,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
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+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
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     <Link>
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diff --git a/contrib/win32/openssh/ssh-add.vcxproj b/contrib/win32/openssh/ssh-add.vcxproj
index e6438c3ca..e36808fc6 100644
--- a/contrib/win32/openssh/ssh-add.vcxproj
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diff --git a/contrib/win32/openssh/ssh-agent.vcxproj b/contrib/win32/openssh/ssh-agent.vcxproj
index 26a3cd297..53316a4cf 100644
--- a/contrib/win32/openssh/ssh-agent.vcxproj
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diff --git a/contrib/win32/openssh/ssh-keyscan.vcxproj b/contrib/win32/openssh/ssh-keyscan.vcxproj
index b2360bbeb..5cb43a0e5 100644
--- a/contrib/win32/openssh/ssh-keyscan.vcxproj
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diff --git a/contrib/win32/openssh/ssh-shellhost.vcxproj b/contrib/win32/openssh/ssh-shellhost.vcxproj
index 60710ddd3..6386e4fb6 100644
--- a/contrib/win32/openssh/ssh-shellhost.vcxproj
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diff --git a/contrib/win32/openssh/ssh-sk-helper.vcxproj b/contrib/win32/openssh/ssh-sk-helper.vcxproj
index 895df9bc5..43a3e8067 100644
--- a/contrib/win32/openssh/ssh-sk-helper.vcxproj
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diff --git a/contrib/win32/openssh/ssh.vcxproj b/contrib/win32/openssh/ssh.vcxproj
index 494b10951..4f2d017e3 100644
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diff --git a/contrib/win32/openssh/sshd.vcxproj b/contrib/win32/openssh/sshd.vcxproj
index ca56b7556..131f5ed8c 100644
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     <Link>
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diff --git a/contrib/win32/openssh/win32iocompat.vcxproj b/contrib/win32/openssh/win32iocompat.vcxproj
index 910a40595..6332c9b89 100644
--- a/contrib/win32/openssh/win32iocompat.vcxproj
+++ b/contrib/win32/openssh/win32iocompat.vcxproj
@@ -165,7 +165,7 @@
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       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
@@ -181,7 +181,7 @@
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       <SDLCheck>false</SDLCheck>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
@@ -197,7 +197,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <SDLCheck>false</SDLCheck>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">
@@ -213,7 +213,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <SDLCheck>false</SDLCheck>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
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   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -231,7 +231,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -249,7 +249,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
@@ -267,7 +267,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">
@@ -285,7 +285,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <ControlFlowGuard>Guard</ControlFlowGuard>
-      <AdditionalOptions>/Gy %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/Gy /ZH:SHA_256 %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>