Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Chrome shows a profile update error and won't start, your bookmarks and other data are likely ...

You open Chrome and see a message that your profile could not be opened correctly, or that your p...

When you open Windows Security and see a “502 Bad Gateway” error, it means the app can’t connect ...

If you manage multiple Windows devices and notice that update settings or installed updates aren'...

You've got a new Mac and want to bring your Chrome bookmarks, passwords, extensions, and settings...

If you see a 502 Bad Gateway error in Command Prompt, it usually means a proxy o...