diff --git a/win_build/uc2_vs2013.vcxproj b/win_build/uc2_vs2013.vcxproj
index d547115e6f..6a62ebd3e5 100644
--- a/win_build/uc2_vs2013.vcxproj
+++ b/win_build/uc2_vs2013.vcxproj
@@ -138,7 +138,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(ProjectName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX86</TargetMachine>
       <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
     </Link>
@@ -188,7 +188,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(ProjectName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
       <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
     </Link>
@@ -236,7 +236,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(ProjectName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX86</TargetMachine>
       <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
     </Link>
@@ -282,7 +282,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(ProjectName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
       <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
     </Link>
diff --git a/win_build/vboxwrapper_vs2013.vcxproj b/win_build/vboxwrapper_vs2013.vcxproj
index a084ac160f..55e11465c1 100644
--- a/win_build/vboxwrapper_vs2013.vcxproj
+++ b/win_build/vboxwrapper_vs2013.vcxproj
@@ -149,7 +149,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(TargetDir)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX86</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
     </Link>
@@ -201,7 +201,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(TargetDir)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
     </Link>
@@ -249,7 +249,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(TargetDir)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX86</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
     </Link>
@@ -297,7 +297,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(TargetDir)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
     </Link>
diff --git a/win_build/wrapper_vs2013.vcxproj b/win_build/wrapper_vs2013.vcxproj
index 6b0d87d93f..6ef0137bc3 100644
--- a/win_build/wrapper_vs2013.vcxproj
+++ b/win_build/wrapper_vs2013.vcxproj
@@ -128,6 +128,7 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <CompileAs>CompileAsCpp</CompileAs>
       <ForcedIncludeFiles>boinc_win.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
+      <CallingConvention>StdCall</CallingConvention>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -142,7 +143,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX86</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
     </Link>
@@ -179,6 +180,8 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <CompileAs>CompileAsCpp</CompileAs>
       <ForcedIncludeFiles>boinc_win.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
+      <CallingConvention>StdCall</CallingConvention>
+      <WholeProgramOptimization>true</WholeProgramOptimization>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -193,9 +196,10 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
@@ -240,7 +244,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX86</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
     </Link>
@@ -287,7 +291,7 @@
       <DelayLoadDLLs>%(DelayLoadDLLs)</DelayLoadDLLs>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>.\Build\$(Platform)\$(Configuration)\$(TargetName).pdb</ProgramDatabaseFile>
-      <SubSystem>Windows</SubSystem>
+      <SubSystem>Console</SubSystem>
       <TargetMachine>MachineX64</TargetMachine>
       <AdditionalLibraryDirectories>$(TargetDir)</AdditionalLibraryDirectories>
     </Link>