Troubleshooting "Can't assign requested address" VPN Connection Error

If you encounter a "Can't assign requested address" error when trying to connect to VPN, this typically occurs when your system cannot assign a local IP address for the outgoing VPN connection. This issue commonly appears after switching between network interfaces (e.g., from ethernet to WiFi or vice versa). Common Error Messages You may see the following errors in your VPN client logs: "UDP send exception: send: Can't assign requested address" "Transport Error: TCP connect error... Can't assign requested address" Resolution To resolve this issue: Disconnect from your current network connection (WiFi or ethernet) Reconnect to your desired network interface Try connecting to the VPN again If the issue persists, try temporarily disabling your local firewall to determine if it's blocking the VPN connection. Remember to re-enable your firewall after testing. Prevention To prevent this issue from occurring: Disconnect from the VPN before switching network interfaces Ensure only one network interface is active when connecting to VPN Wait a few moments after switching networks before attempting to connect to VPN