Open Hamachi > > Preferences > Settings > Advanced Settings . Scroll to Peer Connections . Set Local UDP Address to 12975 . Set Local TCP Address to 12989 . Click Apply and OK , then restart Hamachi. 2. Forward the Ports in Your Router
Hamachi has hidden registry keys that control tunneling behavior. Back up your registry before doing this.
This is the most powerful and effective fix. By forcing Hamachi to use a static, pre-opened port on your router, you give it a clear pathway to form a direct tunnel with other peers.
To fix Hamachi relayed tunnel to direct tunnel issues, follow these steps: hamachi relayed tunnel to direct tunnel fix
If software tweaks fail, your router's hardware firewall is likely blocking the connection. Port forwarding instructs your router exactly where to send Hamachi traffic. 1. Find Your IPv4 Address Press Windows Key + R , type cmd , and hit . Type ipconfig and press Enter .
Are you on a or a restricted network like a university/dorm ?
If you prefer not to forward ports manually, ensure is enabled in your router settings. UPnP allows applications like Hamachi to automatically open the ports they need on demand. Look for UPnP under your router's "Advanced Network" or "NAT" settings tab and toggle it to Enabled . Phase 5: Resetting the Network Interface Priority Open Hamachi > > Preferences > Settings > Advanced Settings
The most common cause of a relayed tunnel is the Windows Firewall blocking the Hamachi Tunneling Engine.
Sometimes, the router is configured correctly, but the local Windows Firewall is blocking the direct UDP handshake.
Check for active commercial VPNs (e.g., NordVPN, ExpressVPN). Turn off other active VPN software while using Hamachi. Set Local TCP Address to 12989
This forces the app to use the static ports you defined in Step 1. 3. Adjust Firewall and Antivirus
If you are still experiencing connection issues, let me know:
A means your network traffic is bouncing through Hamachi's central servers instead of connecting directly to your peer. This creates massive latency, high ping, and frequent disconnections during gaming or file sharing.
