Hello, I have posted here as my problem seems relevant to the original post. Perhaps it may be a larger issue. I have been running a LAN server on a separate PC for over 1 year now. With no changes made to the PC, the server became unreachable shortly after the 1.21 update. I firstly validated the server files and then with that not working, reinstalled the server twice…with no effect. I have tried installing the experimental version and the same thing happens.