diff --git a/frontend/drivers/platform_win32.c b/frontend/drivers/platform_win32.c
index 03e79a1054..dcd5f3947b 100644
--- a/frontend/drivers/platform_win32.c
+++ b/frontend/drivers/platform_win32.c
@@ -311,18 +311,34 @@ static void frontend_win32_environment_get(int *argc, char *argv[],
 
 static uint64_t frontend_win32_get_mem_total(void)
 {
+   /* OSes below 2000 don't have the Ex version, and non-Ex cannot work with >4GB RAM */
+#if _WIN32_WINNT > 0x0400
 	MEMORYSTATUSEX mem_info;
 	mem_info.dwLength = sizeof(MEMORYSTATUSEX);
 	GlobalMemoryStatusEx(&mem_info);
 	return mem_info.ullTotalPhys;
+#else
+	MEMORYSTATUS mem_info;
+	mem_info.dwLength = sizeof(MEMORYSTATUS);
+	GlobalMemoryStatus(&mem_info);
+	return mem_info.dwTotalPhys;
+#endif
 }
 
 static uint64_t frontend_win32_get_mem_used(void)
 {
+   /* OSes below 2000 don't have the Ex version, and non-Ex cannot work with >4GB RAM */
+#if _WIN32_WINNT > 0x0400
 	MEMORYSTATUSEX mem_info;
 	mem_info.dwLength = sizeof(MEMORYSTATUSEX);
 	GlobalMemoryStatusEx(&mem_info);
 	return ((frontend_win32_get_mem_total() - mem_info.ullAvailPhys));
+#else
+	MEMORYSTATUS mem_info;
+	mem_info.dwLength = sizeof(MEMORYSTATUS);
+	GlobalMemoryStatus(&mem_info);
+	return ((frontend_win32_get_mem_total() - mem_info.dwAvailPhys));
+#endif
 }
 
 static void frontend_win32_attach_console(void)
diff --git a/pkg/msvc/msvc-2005/RetroArch-msvc2005.vcproj b/pkg/msvc/msvc-2005/RetroArch-msvc2005.vcproj
index 2cbca08e1c..ed39ed06e1 100644
--- a/pkg/msvc/msvc-2005/RetroArch-msvc2005.vcproj
+++ b/pkg/msvc/msvc-2005/RetroArch-msvc2005.vcproj
@@ -42,7 +42,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories=""$(SolutionDir)\..\..\libretro-common\include";"$(SolutionDir)\..\..\libretro-common\include\compat\msvc";"$(SolutionDir)\..\..\gfx\include""
-				PreprocessorDefinitions="_WIN32_WINNT=0x0500;_WIN32;RARCH_INTERNAL;HAVE_THREADS;HAVE_D3D;HAVE_D3D9;HAVE_GLSL;HAVE_SHADERPIPELINE;HAVE_OPENGL;HAVE_CC_RESAMPLER;HAVE_GRIFFIN;HAVE_LANGEXTRA;HAVE_FBO;HAVE_ZLIB;HAVE_RPNG;HAVE_RJPEG;HAVE_RBMP;HAVE_RTGA;HAVE_IMAGEVIEWER;HAVE_XMB;WANT_ZLIB;HAVE_DINPUT;HAVE_XAUDIO;HAVE_DSOUND;HAVE_DYLIB;HAVE_NETWORKING;HAVE_NETWORK_CMD;HAVE_COMMAND;HAVE_STDIN_CMD;HAVE_RTHREADS;HAVE_DYNAMIC;HAVE_OVERLAY;HAVE_RGUI;HAVE_GL_SYNC;HAVE_MENU;HAVE_7ZIP;HAVE_MATERIALUI;HAVE_LIBRETRODB;HAVE_STB_FONT;__STDC_CONSTANT_MACROS"
+				PreprocessorDefinitions="_WIN32_WINNT=0x0400;_WIN32;RARCH_INTERNAL;HAVE_THREADS;HAVE_D3D;HAVE_D3D9;HAVE_GLSL;HAVE_SHADERPIPELINE;HAVE_OPENGL;HAVE_CC_RESAMPLER;HAVE_GRIFFIN;HAVE_LANGEXTRA;HAVE_FBO;HAVE_ZLIB;HAVE_RPNG;HAVE_RJPEG;HAVE_RBMP;HAVE_RTGA;HAVE_IMAGEVIEWER;HAVE_XMB;WANT_ZLIB;HAVE_DINPUT;HAVE_XAUDIO;HAVE_DSOUND;HAVE_DYLIB;HAVE_NETWORKING;HAVE_NETWORK_CMD;HAVE_COMMAND;HAVE_STDIN_CMD;HAVE_RTHREADS;HAVE_DYNAMIC;HAVE_OVERLAY;HAVE_RGUI;HAVE_GL_SYNC;HAVE_MENU;HAVE_7ZIP;HAVE_MATERIALUI;HAVE_LIBRETRODB;HAVE_STB_FONT;__STDC_CONSTANT_MACROS"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="1"