Go to Protection -> Firewall -> Available Networks . Set the Famatech Radmin VPN Ethernet Adapter to Trusted Network .
If it is not on the list, click , browse to the Radmin VPN installation folder (usually C:\Program Files (x86)\Radmin VPN ), select RadminVPN.exe , and add it. Click OK to save changes. Create Advanced Inbound and Outbound Rules
Log into your router’s admin gateway (usually by typing 192.168.1.1 or 192.168.0.1 into a web browser). Locate the , NAT Forwarding , or WAN settings tab. Find the UPnP setting and toggle it to Enabled . Save the changes and reboot your router. Change Router NAT Type to Moderate/Open
Security software is blocking P2P traffic. radmin vpn relay tcp fix work
Do either of you use a or a strict university/campus Wi-Fi network?
By systematically working through these adjustments, you should be able to force Radmin VPN out of Relay TCP mode and back into a high-speed, low-latency direct connection. If you want to troubleshoot a specific setup, tell me: What are you running?
If your ISP blocks UDP hole punching, install or use ZeroTier as an alternative – but for Radmin specifically: Go to Protection -> Firewall -> Available Networks
Select and enter 443 under Specific local ports (Radmin heavily relies on port 443 UDP for tunneling). Click Next. Select Allow the connection and click Next.
I can provide specific firewall rules or port forwarding steps based on your setup. Share public link
Sometimes the virtual network driver installed by Radmin becomes corrupted or conflicts with other VPN adapters (like Hamachi or OpenVPN). Right-click the Windows Start menu and open . Expand the Network adapters section. Click OK to save changes
Go to Protection -> Firewall -> Available Networks . Set the Famatech Radmin VPN Ethernet Adapter to "Trusted Network".
Routers can become overwhelmed or misconfigured, leading to failed direct connections.
Open the Windows app and go to Apps > Installed Apps . Locate Radmin VPN and click Uninstall .
status in Radmin VPN indicates that a direct peer-to-peer connection could not be established between you and another user, forcing data to go through Radmin's relay servers. This typically results in significantly higher ping (latency) and slower speeds compared to a direct "UDP/OUT" connection. Radmin Club
If the above steps don't resolve the issue, you may need to employ more advanced troubleshooting techniques. These include: