diff --git a/Project64.sln b/Project64.sln
index db5bda645..e814851ce 100644
--- a/Project64.sln
+++ b/Project64.sln
@@ -1,7 +1,6 @@
 
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2013
-VisualStudioVersion = 12.0.31101.0
+Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual Studio 2010 or later
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "3rd Party", "3rd Party", "{AA8F7F8E-5377-4911-859D-8A8817B0DB26}"
 EndProject
diff --git a/PropertySheets/Debug.props b/PropertySheets/Debug.props
index ed3d9416f..9aabfaa47 100644
--- a/PropertySheets/Debug.props
+++ b/PropertySheets/Debug.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemDefinitionGroup>
     <ClCompile>
       <PreprocessorDefinitions>_DEBUG;DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/PropertySheets/Platform.Debug.props b/PropertySheets/Platform.Debug.props
index 9db2d28c1..62f50e9cf 100644
--- a/PropertySheets/Platform.Debug.props
+++ b/PropertySheets/Platform.Debug.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets">
     <Import Project="Platform.props" />
     <Import Project="Debug.props" />
diff --git a/PropertySheets/Platform.Release.props b/PropertySheets/Platform.Release.props
index 73e73ad66..917af587f 100644
--- a/PropertySheets/Platform.Release.props
+++ b/PropertySheets/Platform.Release.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets">
     <Import Project="Platform.props" />
     <Import Project="Release.props" />
diff --git a/PropertySheets/Platform.props b/PropertySheets/Platform.props
index 19dad9044..aea479eee 100644
--- a/PropertySheets/Platform.props
+++ b/PropertySheets/Platform.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <PropertyGroup Label="Configuration">
     <PlatformToolset Condition="'$(DefaultPlatformToolset)'!=''">$(DefaultPlatformToolset)_xp</PlatformToolset>
diff --git a/PropertySheets/Release.props b/PropertySheets/Release.props
index b2f7c5eac..5476e48fd 100644
--- a/PropertySheets/Release.props
+++ b/PropertySheets/Release.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemDefinitionGroup>
     <ClCompile>
       <Optimization>MinSpace</Optimization>
diff --git a/Source/3rdParty/7zip/7zip.vcxproj b/Source/3rdParty/7zip/7zip.vcxproj
index 00f1752ae..f67081340 100644
--- a/Source/3rdParty/7zip/7zip.vcxproj
+++ b/Source/3rdParty/7zip/7zip.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/WTL/WTL.vcxproj b/Source/3rdParty/WTL/WTL.vcxproj
index aefc00cdb..99a4229d1 100644
--- a/Source/3rdParty/WTL/WTL.vcxproj
+++ b/Source/3rdParty/WTL/WTL.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/sdl/sdl2.vcxproj b/Source/3rdParty/sdl/sdl2.vcxproj
index 25a825b67..4e91ce922 100644
--- a/Source/3rdParty/sdl/sdl2.vcxproj
+++ b/Source/3rdParty/sdl/sdl2.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/wx/wx_base.vcxproj b/Source/3rdParty/wx/wx_base.vcxproj
index 2544289b0..37db9e022 100644
--- a/Source/3rdParty/wx/wx_base.vcxproj
+++ b/Source/3rdParty/wx/wx_base.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/wx/wx_core.vcxproj b/Source/3rdParty/wx/wx_core.vcxproj
index 82eb9f894..3c8b268a0 100644
--- a/Source/3rdParty/wx/wx_core.vcxproj
+++ b/Source/3rdParty/wx/wx_core.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/wx/wx_wxjpeg.vcxproj b/Source/3rdParty/wx/wx_wxjpeg.vcxproj
index 998623bc3..e6220f371 100644
--- a/Source/3rdParty/wx/wx_wxjpeg.vcxproj
+++ b/Source/3rdParty/wx/wx_wxjpeg.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/wx/wx_wxpng.vcxproj b/Source/3rdParty/wx/wx_wxpng.vcxproj
index fee870c4b..785e49f8f 100644
--- a/Source/3rdParty/wx/wx_wxpng.vcxproj
+++ b/Source/3rdParty/wx/wx_wxpng.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/wx/wx_wxzlib.vcxproj b/Source/3rdParty/wx/wx_wxzlib.vcxproj
index f1b7b72e8..a76c918f9 100644
--- a/Source/3rdParty/wx/wx_wxzlib.vcxproj
+++ b/Source/3rdParty/wx/wx_wxzlib.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/3rdParty/zlib/zlib.vcxproj b/Source/3rdParty/zlib/zlib.vcxproj
index 94e73f482..7dfd5aacf 100644
--- a/Source/3rdParty/zlib/zlib.vcxproj
+++ b/Source/3rdParty/zlib/zlib.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/Common/Common.vcxproj b/Source/Common/Common.vcxproj
index fe68576ea..c3308312f 100644
--- a/Source/Common/Common.vcxproj
+++ b/Source/Common/Common.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/Glide64/Glide64.vcxproj b/Source/Glide64/Glide64.vcxproj
index 7992a3be3..c00361f6f 100644
--- a/Source/Glide64/Glide64.vcxproj
+++ b/Source/Glide64/Glide64.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/GlideHQ/GlideHQ.vcxproj b/Source/GlideHQ/GlideHQ.vcxproj
index db9f0566c..a8160b166 100644
--- a/Source/GlideHQ/GlideHQ.vcxproj
+++ b/Source/GlideHQ/GlideHQ.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/Glitch64/Glitch64.vcxproj b/Source/Glitch64/Glitch64.vcxproj
index e4c71fec9..b009b23c3 100644
--- a/Source/Glitch64/Glitch64.vcxproj
+++ b/Source/Glitch64/Glitch64.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/Installer/Installer.vcxproj b/Source/Installer/Installer.vcxproj
index e1db49060..29183735a 100644
--- a/Source/Installer/Installer.vcxproj
+++ b/Source/Installer/Installer.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/Project64-core/Project64-core.vcxproj b/Source/Project64-core/Project64-core.vcxproj
index 75ea71f56..c65521169 100644
--- a/Source/Project64-core/Project64-core.vcxproj
+++ b/Source/Project64-core/Project64-core.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/Project64/Project64.vcxproj b/Source/Project64/Project64.vcxproj
index 0ecb71437..ed27ad510 100644
--- a/Source/Project64/Project64.vcxproj
+++ b/Source/Project64/Project64.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/RSP/RSP.vcxproj b/Source/RSP/RSP.vcxproj
index 7f1721105..b285167d5 100644
--- a/Source/RSP/RSP.vcxproj
+++ b/Source/RSP/RSP.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/Settings/Settings.vcxproj b/Source/Settings/Settings.vcxproj
index b6fc47e64..52274f6c0 100644
--- a/Source/Settings/Settings.vcxproj
+++ b/Source/Settings/Settings.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/SortRdb/SortRdb.vcxproj b/Source/SortRdb/SortRdb.vcxproj
index 255f33ece..1f10400ce 100644
--- a/Source/SortRdb/SortRdb.vcxproj
+++ b/Source/SortRdb/SortRdb.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
diff --git a/Source/nragev20/NRage_Input_V2.vcxproj b/Source/nragev20/NRage_Input_V2.vcxproj
index 9841e1433..3a3765517 100644
--- a/Source/nragev20/NRage_Input_V2.vcxproj
+++ b/Source/nragev20/NRage_Input_V2.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>