diff --git a/visualc/KLU_COMPLEX/KLU_COMPLEX.vcxproj b/visualc/KLU_COMPLEX/KLU_COMPLEX.vcxproj
index 34f0c49fd..918b46d87 100644
--- a/visualc/KLU_COMPLEX/KLU_COMPLEX.vcxproj
+++ b/visualc/KLU_COMPLEX/KLU_COMPLEX.vcxproj
@@ -118,6 +118,7 @@
       <CompileAs>CompileAsC</CompileAs>
       <ExceptionHandling>false</ExceptionHandling>
       <BufferSecurityCheck />
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
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   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -133,13 +134,17 @@
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       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
-      <OpenMPSupport>true</OpenMPSupport>
+      <OpenMPSupport>false</OpenMPSupport>
       <PrecompiledHeader>
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       <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <DebugInformationFormat>None</DebugInformationFormat>
       <CompileAs>CompileAsC</CompileAs>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
+    <Lib>
+      <LinkTimeCodeGeneration>true</LinkTimeCodeGeneration>
+    </Lib>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\maths\KLU\klu_internal.h" />
diff --git a/visualc/KLU_REAL/KLU_REAL.vcxproj b/visualc/KLU_REAL/KLU_REAL.vcxproj
index fa445cfdd..40a2ee3f9 100644
--- a/visualc/KLU_REAL/KLU_REAL.vcxproj
+++ b/visualc/KLU_REAL/KLU_REAL.vcxproj
@@ -118,6 +118,7 @@
       <CompileAs>CompileAsC</CompileAs>
       <ExceptionHandling>false</ExceptionHandling>
       <BufferSecurityCheck />
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -133,13 +134,17 @@
       <ExceptionHandling>
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       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
-      <OpenMPSupport>true</OpenMPSupport>
+      <OpenMPSupport>false</OpenMPSupport>
       <PrecompiledHeader>
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       <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <DebugInformationFormat>None</DebugInformationFormat>
       <CompileAs>CompileAsC</CompileAs>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
+    <Lib>
+      <LinkTimeCodeGeneration>true</LinkTimeCodeGeneration>
+    </Lib>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\maths\KLU\klu_internal.h" />