Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see an error message saying Windows Security has a version mismatch, or the Security Cente...

When updating Microsoft Edge, you may encounter error 0x80072eff with a message that the update f...

If you reset Outlook settings and now your mail, calendar, or contacts won't sync, you're not alo...

You're connected to a remote desktop session, and suddenly you see "Your remote desktop session h...

If Windows Defender won’t open—whether it crashes, shows a blank window, or does nothing when you...

When you try to install or repair Windows Search using an offline installer, you might see an err...