diff --git a/Source/Engine/Platform/Windows/WindowsPlatform.cpp b/Source/Engine/Platform/Windows/WindowsPlatform.cpp
index 697174a47..272d38cf7 100644
--- a/Source/Engine/Platform/Windows/WindowsPlatform.cpp
+++ b/Source/Engine/Platform/Windows/WindowsPlatform.cpp
@@ -556,14 +556,8 @@ void WindowsPlatform::PreInit(void* hInstance)
     FlaxDbgHelpUnlock();
 #endif
 
+    // Get system version
     GetWindowsVersion(WindowsName, VersionMajor, VersionMinor, VersionBuild);
-
-    // Validate platform
-    if (VersionMajor < 6)
-    {
-        Error(TEXT("Not supported operating system version."));
-        exit(-1);
-    }
 }
 
 bool WindowsPlatform::IsWindows10()
@@ -640,25 +634,25 @@ bool WindowsPlatform::Init()
 
     // Check if can run Engine on current platform
 #if WINVER >= 0x0A00
-    if (!IsWindows10OrGreater() && !IsWindowsServer())
+    if (VersionMajor < 10 && !IsWindowsServer())
     {
         Platform::Fatal(TEXT("Flax Engine requires Windows 10 or higher."));
         return true;
     }
 #elif WINVER >= 0x0603
-    if (!IsWindows8Point1OrGreater() && !IsWindowsServer())
+    if ((VersionMajor < 8 || (VersionMajor == 8 && VersionMinor == 0)) && !IsWindowsServer())
     {
         Platform::Fatal(TEXT("Flax Engine requires Windows 8.1 or higher."));
         return true;
     }
 #elif WINVER >= 0x0602
-    if (!IsWindows8OrGreater() && !IsWindowsServer())
+    if (VersionMajor < 8 && !IsWindowsServer())
     {
         Platform::Fatal(TEXT("Flax Engine requires Windows 8 or higher."));
         return true;
     }
 #else
-    if (!IsWindows7OrGreater() && !IsWindowsServer())
+    if (VersionMajor < 7 && !IsWindowsServer())
     {
         Platform::Fatal(TEXT("Flax Engine requires Windows 7 or higher."));
         return true;
diff --git a/Source/Engine/Video/MF/VideoBackendMF.cpp b/Source/Engine/Video/MF/VideoBackendMF.cpp
index 01d6ec481..75950f3aa 100644
--- a/Source/Engine/Video/MF/VideoBackendMF.cpp
+++ b/Source/Engine/Video/MF/VideoBackendMF.cpp
@@ -17,7 +17,7 @@
 // Fix compilation for Windows 8.1 on the latest Windows SDK
 typedef enum _MFVideoSphericalFormat { } MFVideoSphericalFormat;
 #endif
-#if !defined(MF_SOURCE_READER_CURRENT_TYPE_INDEX) && !defined(PLATFORM_GDK)
+#if !defined(MF_SOURCE_READER_CURRENT_TYPE_INDEX) && !defined(PLATFORM_GDK) && WINVER < _WIN32_WINNT_WIN10
 // Fix compilation for Windows 7 on the latest Windows SDK
 #define MF_SOURCE_READER_CURRENT_TYPE_INDEX 0xFFFFFFFF
 #endif
diff --git a/Source/Tools/Flax.Build/Platforms/Windows/WindowsToolchain.cs b/Source/Tools/Flax.Build/Platforms/Windows/WindowsToolchain.cs
index b33ca5e25..428cc2437 100644
--- a/Source/Tools/Flax.Build/Platforms/Windows/WindowsToolchain.cs
+++ b/Source/Tools/Flax.Build/Platforms/Windows/WindowsToolchain.cs
@@ -14,7 +14,7 @@ namespace Flax.Build
         /// Specifies the minimum Windows version to use (eg. 10).
         /// </summary>
         [CommandLine("winMinVer", "<version>", "Specifies the minimum Windows version to use (eg. 10).")]
-        public static string WindowsMinVer = "7";
+        public static string WindowsMinVer = "10";
     }
 }