Fix 'Port Already Allocated' Error in Windows Defender on Windows 10
You may see an error like "Windows Defender Firewall cannot use port X because it is already allo...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix 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 Fix Remote Desktop Permission Denied Error
When you try to connect to a remote Windows machine and get a 'permission denied' or 'access deni...
Fixing Task Scheduler 504 Gateway Timeout Configuration
If you have a scheduled task that calls a URL or web service and you see a 504 Gateway Ti...
Fix OneDrive Auto Start Not Working in Task Manager
If OneDrive no longer starts automatically when you log into Windows, the first place to check is...
How to Fix Windows Defender Cache Not Clearing
If you've noticed that Windows Defender isn't releasing disk space after a scan or that the cache...
Topic paths
Quick titles
Windows Terminal Profile Error TroubleshootingFix Windows Defender DNS Error 0x800704cfLogin Loop After BitLocker Recovery Key: SolutionsFatal: Repository Not Found After Git Pull – FixesHow to Fix Windows Security Virus Protection Turned OffPowerShell Backup Restore Directory Not Found FixWindows Terminal Permission Denied on Launch FixHow to Stop BitLocker Crashes After Windows Update