Accessing another user's machine that has restrictions in an online game server
Accessing another user's machine that has restrictions in an online game server
You're wondering if accessing his Minecraft server from your own PC could trigger a ban based on his IP address.
In short, steer clear of his computer as much as possible. That was my thought.
In fact, "steer clear of his network." Even if you bring your own computer into his house, you'll retain the same public IP address when accessing from elsewhere, which would keep you restricted.
It isn't about the PC being blocked, only the IP address he uses to join that MC server.
It depends on the configuration of their accounts. Unless they intentionally blocked all logins from a particular device or IP, your access should generally remain allowed. Certain gaming YouTubers face restrictions across platforms, but alternative profiles often bypass those limits.