Fallout 76 is an online-only game and, as such, it gets a wide variety of errors from time to time, depending on what might've gotten messed up. Communication Error is one such issue, and you may have been getting it quite a lot as of late.
From what we've found, it seems the Fallout 76 Communication Error relates somehow to port forwarding and the way your router is set up. While we can't be sure, it does seem like the only way to resolve this issue is to set up port forwarding.
How to fix Communication Error in Fallout 76?
Some people who reported this issue a while back also noted that it can be resolved by setting up port forwarding protocols on your router. If you're unsure on how this is supposed to work, portforward.com is an exhaustive source of info on the matter. If you know what's what, find the ports you need to forward below.
Fallout 76 PC Ports
- TCP: 27015-27030, 27036-27037
- UDP: 3000-3010, 4380, 27000-27031, 27036
Fallout 76 PS4 Ports
- TCP: 1935, 3478-3480
- UDP: 3000-3010, 3074, 3478-3479
Fallout 76 XBOne Ports
- TCP: 3074
- UDP: 88, 500, 3000-3010, 3074, 3544, 4500
Depending on your platform, forwarding these ports should fix the Communication Error you've been getting. If we come across any other fixes for this issue, we'll keep this guide up-to-date, so keep checking if the solutions don't work.
Alternatively, if the solution works, go ahead and nuke stuff already.