diff --git a/visualc/sharedspice.vcxproj b/visualc/sharedspice.vcxproj
index 9a40cd957..e52fcdd25 100644
--- a/visualc/sharedspice.vcxproj
+++ b/visualc/sharedspice.vcxproj
@@ -5,6 +5,14 @@
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+    <ProjectConfiguration Include="ReleaseOMP|x64">
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@@ -13,6 +21,10 @@
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       <Platform>Win32</Platform>
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   <PropertyGroup Label="Globals">
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@@ -23,26 +35,47 @@
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
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   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseOMP|Win32'" Label="Configuration">
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     <PlatformToolset>v140</PlatformToolset>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseOMP|x64'" Label="Configuration">
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@@ -53,12 +86,21 @@
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     <LinkIncremental />
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental />
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseOMP|Win32'">
     <LinkIncremental />
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseOMP|x64'">
+    <LinkIncremental />
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       <Message>force recompilation of conf.c with actual date</Message>
@@ -100,6 +142,52 @@
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     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <PreBuildEvent>
+      <Message>force recompilation of conf.c with actual date</Message>
+      <Command>if exist $(IntDir)conf.obj del $(IntDir)conf.obj</Command>
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+    <CustomBuildStep>
+      <Message>
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+      <Command>
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+      <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
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+      <PreprocessSuppressLineNumbers>false</PreprocessSuppressLineNumbers>
+      <MinimalRebuild>false</MinimalRebuild>
+      <ExceptionHandling>
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+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <RuntimeTypeInfo>false</RuntimeTypeInfo>
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+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <CompileAs>CompileAsC</CompileAs>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
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+      <AdditionalDependencies>psapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
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+      <SubSystem>Windows</SubSystem>
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+      <HeapCommitSize>0</HeapCommitSize>
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@@ -141,6 +229,52 @@
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+      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
+      <WholeProgramOptimization>true</WholeProgramOptimization>
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+      <MinimalRebuild>false</MinimalRebuild>
+      <ExceptionHandling>
+      </ExceptionHandling>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <RuntimeTypeInfo>false</RuntimeTypeInfo>
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+      <DebugInformationFormat>
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+      <CompileAs>CompileAsC</CompileAs>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
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+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
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   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseOMP|Win32'">
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@@ -183,6 +317,53 @@
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     <ClInclude Include="..\src\ciderlib\oned\oneddefs.h" />
     <ClInclude Include="..\src\ciderlib\oned\onedext.h" />