: In Firewall settings, go to Advanced Settings > Public Profile > Customize (under Protected network connections). If Hamachi is checked, uncheck it to prevent the firewall from applying strict public rules to your virtual network. Advanced Fix: Static Ports and Port Forwarding
Hamachi loves to hop ports, which confuses most routers. Forcing a static port makes it easier to "punch through" the firewall. hamachi direct tunnel blocked
: Ensure the Hamachi service is running. You can do this by going to the Services app (Windows) or Activity Monitor (Mac), finding the Hamachi service, and restarting it if necessary. : In Firewall settings, go to Advanced Settings
If your router has poor NAT traversal support, Hamachi may fail to "punch through" to other peers. How To Fix: Hamachi Yellow Triangle of Death : In Firewall settings