Checklists for software errors, setup, and tool workflows.

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Command Prompt Update Troubleshooting Checklist

If Command Prompt fails to update or behaves unexpectedly after an update, the problem is often a...

Fix 'Windows Defender File Locked by Another Program' Error

You try to delete, move, or rename a file, and Windows shows an error: “The action can’t be compl...

How to Handle '404 Not Found' Errors in PowerShell

When you get a '404 Not Found' error in PowerShell while using Invoke-WebRequest or ...

How to Fix Windows Security Service Not Running

If you see an error that the Windows Security service is not running, the Security Center or Wind...

Fix Windows Defender Proxy Error: Permission Denied

You try to update Windows Defender or run a scan and get an error like "Permission denied"

PowerShell Not Responding When Opening: Quick Fixes
You click PowerShell and nothing happens — or the window opens but immediately freezes. This is a...