Fix OpenVPN Permission Denied on Tun Device
When running OpenVPN, you might see an error like ERROR: Cannot open TUN/TAP dev /dev/net/t...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesWindows Terminal Rate Limit Error: Troubleshooting Checklist
If you see a rate limit error in Windows Terminal, it usually means the terminal is sending too m...
Fix BitLocker Connection Refused Configuration Error
You're setting up BitLocker, and suddenly you see a 'Connection refused' error when trying to con...
Fix Windows Security Connection Timeout in Remote Desktop
You try to connect to a remote PC via Remote Desktop (RDP) and get a message like: "An authentica...
Quick Fix for Remote Desktop Authentication Errors
You try to connect to a remote desktop, but instead of a login prompt, you see an authentication ...
How to Activate Windows with a Digital License
If you've upgraded to Windows 10 or 11 from a previous version, or bought a new PC with Windows p...
Issue queue
SitemapFix WSL Ubuntu Internet Not Working Due to Windows Firewall
Fix Chrome Profile Access Denied Error
BitLocker Stuck Loading: How to Fix with Command Prompt
Chrome Port Conflict Checklist
How to Fix MySQL Connection Refused Error
How to Resolve Windows Security Error 0x80073b01
How to Resolve Windows Activation Expired Post-Upgrade
How to Fix Task Scheduler Error 0x80070005
OneDrive Selective Sync: How to Choose Which Folders Sync
How to Resolve Defender Token Expired Error
How to Fix OneDrive Partial Sync Issues
Windows Defender Failed to Start – Group Policy Fix
Fix Chrome Profile Access Denied Error
BitLocker Stuck Loading: How to Fix with Command Prompt
Chrome Port Conflict Checklist
How to Fix MySQL Connection Refused Error
How to Resolve Windows Security Error 0x80073b01
How to Resolve Windows Activation Expired Post-Upgrade
How to Fix Task Scheduler Error 0x80070005
OneDrive Selective Sync: How to Choose Which Folders Sync
How to Resolve Defender Token Expired Error
How to Fix OneDrive Partial Sync Issues
Windows Defender Failed to Start – Group Policy Fix