Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're new to Windows 10 or the Microsoft Store isn't working as expected, this guide covers i...

If you see an error like “Windows activation file locked by antivirus” or activation repeatedly f...

If you see the error “Windows Search Token Expired” with code 0x80090016, it usually means the se...

You open the Microsoft Store, try to download or update an app, and get error code 0x80073cf9. Th...

You're running Windows Update, and after a restart, the screen goes blank—no cursor, no logo, jus...

After reinstalling Windows, you may see an activation error: “We can't activate Windows on this d...