Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

Windows Security (formerly Windows Defender) can sometimes fail to open, show blank screens, or r...

If you see “Windows Defender cannot connect” or similar errors, it usually means the service is b...

You try to run Windows Backup and Restore, but get a "permission denied" error. This usually mean...

You see a message like "Windows could not search for new updates" or "An error occurred while che...

If files aren't syncing, icons are stuck, or you see error messages, this checklist walks you thr...

When Windows Search returns a 504 gateway timeout, it usually means the search service or its bac...