After applying the fixes, verify the connection status:
Sometimes, the router is configured correctly, but the local Windows Firewall is blocking the direct UDP handshake.
In some cases, the router's NAT type prevents P2P connections even with port forwarding.
IPv6 can interfere with direct tunneling: hamachi relayed tunnel to direct tunnel fix
If you are still on Relay, your router’s UPnP is likely broken.
Enable UPnP:
The Nuclear Option – DMZ (Not recommended for security, use only for testing): Set your PC’s IP in the router’s DMZ. If Hamachi switches to Direct immediately, your NAT is too strict. Remove DMZ and solve via Port Forwarding instead. After applying the fixes, verify the connection status:
You’ve set up your LogMeIn Hamachi network. All the nodes are green. You can ping each other. But when you try to transfer a file, play a LAN game, or access a remote desktop, it feels like wading through molasses. You check the Hamachi status window and see two dreaded words next to a peer: Relayed Tunnel.
For any power user, gamer, or remote worker, a "Relayed" connection is the enemy of performance. It introduces high latency, severe bandwidth limitations (often capped at 150-300 KB/s), and packet loss.
The gold standard is a Direct Tunnel. This creates a peer-to-peer (P2P) UDP connection, utilizing your full internet upload speed. So, how do you force that upgrade from "Relayed" to "Direct"? Reconnect:
This article is a definitive, step-by-step technical deep dive into diagnosing and fixing the Relayed Tunnel problem permanently.
Date: October 26, 2023 Subject: Technical Troubleshooting Guide for LogMeIn Hamachi Connectivity Issues Status: Analysis & Resolution Steps
If you still have a relayed tunnel, convert one PC into a "Gateway" and have others connect via that machine.