Command Prompt Troubleshooting Checklist for Windows
When Command Prompt stops working as expected—won't open, returns odd errors, or commands don't r...
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Browse labHow to Fix a File Locked by Another User in an RDP Session
You try to edit a file over Remote Desktop and get an error like "The file is locked by another u...
How to Fix Windows Defender Authentication Failed Error
If you see "Authentication failed" when opening Windows Defender or trying to run a scan, it usua...
How to Restart Windows Defender Threat Service
If Windows Defender shows a warning like "Threat service has stopped" or "Virus & threat protecti...
Command Prompt Not Working in Safe Mode: Fixes
You boot into Safe Mode to fix a system problem, but the Command Prompt won't open—either it flas...
Fix Windows Defender Connection Refused Error 0x80070005
When you open Windows Defender (Microsoft Defender Antivirus) and see a connection refused error ...