Checklists for software errors, setup, and tool workflows.

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Fix Windows Update Connection Refused When Using VPN

If you see a "connection refused" error when running Windows Update while connected to a VPN, it'...

Fix Windows Update Access Denied Due to Permission Settings

You try to run Windows Update, but get an 'Access Denied' error. This usually means the update pr...

Fix Windows Activation Version Mismatch via Command Prompt

If you see an error like "The version of Windows you are trying to activate does not match the pr...

Fix PowerShell 502 Bad Gateway Certificate Errors

When you run a PowerShell script that makes an HTTPS request, you might see a 502 Bad Gateway err...

How to Remove a Lock File Blocking Ubuntu apt update

When running sudo apt update on Ubuntu, you may see an error like:
E: Could...

Fix Task Scheduler Task Not Running Due to Permission Denied
You set up a scheduled task in Windows Task Scheduler, but it fails with a 'permission denied' er...