Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Windows fails to activate and you see error codes like 0x8007232B, 0xC004F074, or “Windows can...

You open Windows Security and get error 0x80070422, or see a message that the app can't start. Th...

Users on Windows 10 may encounter a 502 Bad Gateway error when trying to sync fi...

If you see the error 'Windows Activation Module Not Found' when trying to activate Windows 10, th...

You try to run a PowerShell command and get an authentication failed error. The message might say...

If you notice Windows Security's real-time protection keeps turning off by itself, your PC may be...