Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see error 0xc004f074 when activating Windows Server 2019. This usually means the server can't...

If you see 'Token expired' or 'The security token included in the request is expired' when runnin...

Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...

When you see 'cmd service unavailable permission denied' in the Windows command prom...

You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...

If Windows Search stops returning files, emails, or settings, the search index database may be co...