Microsoft Genuine Advantage Diagnostic Tool Validation Unsupported Os May 2026

:For Windows 8 and newer, use the native command-line tool. Open Command Prompt as Administrator and run: Licensingdiag.exe -report %userprofile%\desktop\report.txt This generates a modern diagnostic report directly on your desktop.

: Microsoft officially retired many components of the Windows Genuine Advantage (WGA) system years ago in favor of integrated digital licensing. :For Windows 8 and newer, use the native command-line tool

: The tool (MGADiag.exe) is generally for Windows 7 or older. Running it on Windows 8, 10, or 11 will trigger the "unsupported OS" message. :For Windows 8 and newer

If you’re running the and hit the "Validation Unsupported OS" error, it usually means you’re trying to use an outdated tool on a modern operating system. :For Windows 8 and newer, use the native command-line tool