Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open Chrome, click the extensions icon, and nothing shows up—or you get an error message like...

If you've recently changed your Windows password and now see errors like 'The security token has ...

You try to activate Windows, but instead get an error message saying the activation configuration...

You try to download an app from the Microsoft Store, but instead of progress, you see a message a...

If you see an error like Error: unable to verify the first certificate or SSL ...

How to Fix Windows Update Error 0x80073712
You see error 0x80073712 when trying to install updates. It usually means a system file or compon...