Checklists for software errors, setup, and tool workflows.

Fix OneDrive Sync 'Connection Refused' Error

When OneDrive shows a 'connection refused' error during sync, it usually means the app can't reac...

Windows Defender File Locked: How to Fix It

You try to edit, move, or delete a file and Windows says it's open in Windows Defender. This can ...

Fix PowerShell Auto-Start 'Permission Denied' Error

You set a PowerShell script to run automatically at startup, but instead of running, you see a 'P...

Fix Command Prompt Authentication Failed in Windows 10

If you see 'authentication failed' when using Command Prompt in Windows 10, it usually means your...

How to Reinstall Windows Defender in Windows 10

Windows Defender (now called Microsoft Defender Antivirus) is built into Windows 10 and typically...

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...