I posted this in another forum, sorry! I've tried and searched for multiple fixes like reinstalling the Visual C++ packages, restarting your computer, restarting your steam, and revalidating your files and all of them didn't seem to work. I'm just checking if this is becoming a common problem now since most of the threads I found we're at around 2018 - 2019. I'll list the signs I've seen when I was trying to connect with my friend... - Can't see the "Enter Invite Code" button - As the host, I'm not getting the "Show Invite" button and the "Invite Friend" button - As for the person I'm inviting, they can't see the "Enter Invite Code" button either - I can't invite them via Steam At some point, I was able to send out invites to my friend but then again even after accepting those requests my friend can't enter the game. It might fix itself sometime but who knows, I'll update this thread if something happens. Thanks!