Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see an error referencing a log file when opening Microsoft Store, the app might fail to lo...

You log into a system, open Command Prompt, and immediately see an error that your authentication...

If the Microsoft Store app is missing, won't open, or keeps crashing, you can reinstall it using ...

If Windows Defender shows an error saying it cannot connect to Windows Update, it usually means t...

You're working or browsing and a Windows security warning pops up: "There is a problem with this ...

If you're looking to run Windows Defender on a Mac, you're likely trying to scan files or use a f...