Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you try to install Windows Search using an offline installer, you might see error 0x80072ee7...

If Outlook is crashing, not syncing, or asking for your password repeatedly, a corrupted profile ...

You open Windows Security and see nothing but a white screen. The app appears to load but no cont...

If Windows Defender won't start or you see warnings that it's turned off, the underlying service ...

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

You open Settings > Update & Security > Activation, and it just sits there spinning. The activati...