Checklists for software errors, setup, and tool workflows.

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Fix Chrome ERR_TUNNEL_CONNECTION_FAILED on Windows 10

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

Fix Windows Activation Error 0x8007232B: Service Unavailable

When you see the error "Windows Activation Service Unavailable" with code 0x8007232B, Windows is ...

Fix Chrome Profile Offline Installer Missing DLL Files

You downloaded the Chrome offline installer, but when you run it, you get an error about missing ...

Fix Windows Defender Service Not Starting (Error 404)

If you see error 404 when trying to start Windows Defender, it usually means the service executab...

Fix PowerShell 404 Error When Using Invoke-WebRequest

When you run Invoke-WebRequest in PowerShell and get a 404 Not Found

Fix Windows Defender Authentication Error from Corrupted System Files
You open Windows Defender and see an authentication failed error. This often happens after a fail...