Co-Op Not Working

[dumb_betch_disease]

I have had Stardew Valley for about 6 months now and my multiplayer (Co-op) option has never worked. I play on a PC, and just updated to the most recent version. When I click on co-op the only option I have is LAN, and that doesn't even work. I have both tried to host games, and join games with that and it will not let me do either. In the past it would just not load, however since the update the entire game crashes when I try to load a Co-op game over LAN.

I have tried all the easy fixes, like making sure I'm logged into steam while on the game, as well as going through all my firewall connection settings. Not only that but I have also logged into steam on other peoples PCs (that have stardew valley with no co-op issues) and the issue still continues so I know it is not my computer. I asked the Stardew Valley Reddit page and no one had different ideas of how to fix this bug.

Any suggestions would be appreciated.