Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When running Disk Cleanup or the Windows Update troubleshooter, you might see error 0x80070002 an...

You search for a file by name in the Windows search box, but nothing shows up—even though you kno...

You open the Microsoft Store on Windows 11 and see 'Access Denied' or 'You need permission to mak...

If you see a 404 Not Found error when trying to open your Chrome profile on Mac,...

If you see 'Windows Update command not found' when running wuauclt or usoclien...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED on Windows 10
If you see ERR_TUNNEL_CONNECTION_FAILED in Chrome while browsing on Windows 10, ...