diff --git a/DirectXTex/DirectXTex_GDK_2017.vcxproj b/DirectXTex/DirectXTex_GDK_2017.vcxproj
index 5b5a94e..fc47136 100644
--- a/DirectXTex/DirectXTex_GDK_2017.vcxproj
+++ b/DirectXTex/DirectXTex_GDK_2017.vcxproj
@@ -250,6 +250,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -272,6 +274,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -294,6 +298,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -316,6 +322,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -338,6 +346,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -360,6 +370,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -379,6 +391,8 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -398,6 +412,8 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>_DEBUG;__WRL_NO_DEFAULT_LIB__;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
@@ -417,6 +433,8 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>_DEBUG;__WRL_NO_DEFAULT_LIB__;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <FXCompile>
       <ShaderModel>6.0</ShaderModel>
diff --git a/DirectXTex/DirectXTex_GDK_2019.vcxproj b/DirectXTex/DirectXTex_GDK_2019.vcxproj
index 60f8efe..f2a29d7 100644
--- a/DirectXTex/DirectXTex_GDK_2019.vcxproj
+++ b/DirectXTex/DirectXTex_GDK_2019.vcxproj
@@ -250,6 +250,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -273,6 +275,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -296,6 +300,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -319,6 +325,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -342,6 +350,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -365,6 +375,8 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -385,6 +397,8 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -405,6 +419,8 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>_DEBUG;__WRL_NO_DEFAULT_LIB__;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>
@@ -425,6 +441,8 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>_DEBUG;__WRL_NO_DEFAULT_LIB__;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <OpenMPSupport>true</OpenMPSupport>
+      <AdditionalOptions>/Zc:twoPhase- %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>5204</DisableSpecificWarnings>
     </ClCompile>
     <FXCompile>