Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you try to open Command Prompt and it fails with a configuration error, it usually means a s...

You try to update OneDrive but get an error message. Reinstalling might fix it, but that means lo...

If you're having trouble with the Microsoft Store—apps not downloading, updates stuck, or the sto...

After a Windows update, you might see a message that Windows is not genuine, even though it was a...

If you see error 0x8007042c when trying to open Windows Defender or run a security scan, it's oft...

If Outlook keeps asking for your password even after you enter it correctly, or you see a login l...