Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You start Chrome and see an error like "The profile appears to be in use by another Chrome pr...

Fix Windows Defender Missing After Update
After a Windows update, some users find that Windows Defender is missing from the system tray, Se...

Fix Windows Defender Not Opening Error 404
You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...

Fix Windows Search Bar Not Working After Update
After a Windows update, the search bar may stop responding or show no results. This is a known is...

Fix Windows Update Proxy Error on Windows 10
If you see a proxy error when running Windows Update on Windows 10, it usually means the system c...

Fix Outlook Setup Failed Permission Denied Error
When setting up Outlook for the first time or adding a new email account, you might see an error ...