Hamachi Peer Problem

Select and check the box Allow service to interact with desktop .

Ensure the "Power" button in the Hamachi UI is blue (on). Disable the Windows Firewall

| Cause | Explanation | |-------|-------------| | | Windows Defender, third-party AV, or router firewall blocks Hamachi traffic | | Network adapter issues | Hamachi virtual adapter disabled or corrupted | | IP conflicts | Two peers assigned the same Hamachi IP | | Proxy/VPN interference | Another VPN or proxy service conflicts with Hamachi | | Outdated client | Mismatched versions across peers | | Relay mode | Unable to establish direct peer-to-peer tunnel, falling back to slower relay | hamachi peer problem

If ping fails but tracert shows multiple hops → relay mode. If no response → firewall or adapter issue.

The most frequent cause of the peer problem is the Windows Defender Firewall blocking the incoming VPN traffic. Open the and go to System and Security . Click on Windows Defender Firewall . Select Turn Windows Defender Firewall on or off . Switch it to Off for both Private and Public networks. Select and check the box Allow service to

If all else fails:

SlipisNull 5:43 Troubleshooting communication between LogMeIn Hamachi ... You generally see a warning next to a peer if the security settings block traffic between peers. Action/Workaround. Select the war... GoTo Support Troubleshooting Hamachi network adapter connection and ... Enable the DHCP Client and Network Connections services in services. msc. Press the Windows key + R. Result: The Run box is displa... GoTo How to Resolve Hamachi Inbound Traffic Blocked Issue Aug 26, 2020 — If no response → firewall or adapter issue

Ensure both users are running the latest version of Hamachi.