Checklists for software errors, setup, and tool workflows.

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How to Fix Windows Security Error 0x80070422

You open Windows Security and get error 0x80070422, or see a message that the app can't start. Th...

Fix 'Windows Security Failed to Start Access Denied' Error

You click on Windows Security and see 'Windows Security failed to start. Access denied.' This usu...

Fix Microsoft Store Not Opening After Update

After a Windows update, you might click the Microsoft Store icon and see nothing happen—no window...

How to Start the Windows Update Service When It Stops

If Windows Update isn't working, the first thing to check is whether the Windows Update service i...

How to Fix Chrome ERR_TUNNEL_CONNECTION_FAILED

You're browsing in Chrome, and suddenly a page fails to load with the error ERR_TUNNEL_CO...

Step-by-Step Checklist for Edge Update Failed Repair
When Microsoft Edge fails to update, you might see errors like "Update failed" or "Something went...