Windows 11 Memory Diagnostic Tool Jun 2026

or frequent "low memory" error messages.

or freezes, especially during memory-intensive tasks like gaming or video editing. windows 11 memory diagnostic tool

If you change settings, press F10 to apply them and restart the test. or frequent "low memory" error messages

Using the Windows Memory Diagnostic Tool is the fastest way to rule out hardware failure when troubleshooting an unstable Windows 11 PC. windows 11 memory diagnostic tool

You should run a memory diagnostic if you experience the following symptoms:

: This schedules the test for your next manual restart.

If you want a more thorough test, you can press while the tool is running to access Options.