
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

When running OpenVPN, you might see an error like ERROR: Cannot open TUN/TAP dev /dev/net/t...

You try to run Windows Update and get an error like 0x8024401c or a message that the update servi...

If Outlook fails to connect, shows a "trying to connect" status, or gives a proxy-related error, ...

You run Disk Cleanup, check "Windows Update Cleanup", but nothing happens—or the option is missin...

When you see 'This file is locked' or 'The file is in use' while trying to edit a file in Microso...

You run systemctl status and see the service flipping between 'activating' and 'fail...