Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a recent system update, you may see command not found when trying to run

You see error 0x800704ec when opening Windows Defender or Windows Security. The message says auth...

If you see a '502 bad gateway' error in Windows Defender, it usually means the security service c...

If you see error 0x80070005 when Windows tries to activate automatically, it usually means a perm...

You open Windows Terminal and see an error about a missing or conflicting dependency, or a profil...

When Windows Search stops working—missing files, slow results, or no results at all—it's usually ...