Fix Windows Defender DNS Error 0x800704cf
You open Windows Defender and see error code 0x800704cf. This usually means Windows Defender can’...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix 'Port Already Allocated' with Security Permission Denied
You try to start a service or application, and you get an error like "port already allocated" or ...
Fix PowerShell Invoke-WebRequest Network Errors Behind a Proxy
When you run Invoke-WebRequest in PowerShell and hit a network error, a misconfigure...
Fix OneDrive Sync Path Not Found When Moving Files
You try to move a file into a OneDrive folder and get a 'path not found' error. The folder looks ...
Fix Command Prompt Crashing After Windows Update
After a recent Windows update, you might find that Command Prompt opens briefly and then closes i...
Windows Defender Troubleshooting Checklist
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...
Topic paths
Quick titles
PowerShell Execution Policy Bypass: Quick Command ExamplesFix Windows Update Stuck at 100%Windows Security Cache TroubleshootingFix Command Prompt 'Connection Failed Permission Denied' ErrorWindows Security Error: Reset and Repair GuideApache Won't Start After System Update: Troubleshooting GuideResolve 'Permission Denied' During Windows Activation Backup RecoveryMicrosoft Teams Microphone Permission Denied Fix