I've recently made a Minecraft server and configured the IP using Hamachi.
I got a couple friends to join and play on the server, but one friend just can't seem to join. We are all using the latest version of Hamachi and are joined on the same network.
He had a problem where there were yellow triangles showing in Hamachi, but we fixed it by installing the network adapter drivers for Hamachi. We allowed Hamachi through both Windows and its antivirus software and firewall. We checkmarked all Java's to private, restarted the computer, reinstalled Hamachi multiple times and everything seems to be alright, but he still cannot connect to the Minecraft server. We are using the latest version of Minecraft which is 1.15.2.