[2.0.66] Joining a game succeeds but does not download the map

[terrafox]

Everything was fine two days ago, but today we encountered a problem.

My friend and I are trying to connect to each other via steam. I'm running a multiplayer game using the save we played on recently. My friend is trying to join using steam and the map doesn't even start downloading (0b, 0b/s). It waits for a while and then disconnect. When I try to connect to this friend, I have the same problem, but we were both able to connect to someone else's server in public games.

I want my friend to be able to connect

I've never encountered this problem before, but now no matter how much we try, we can't connect. We tried disabling the firewall, connecting via LAN, and making the game public, tried using different saves — nothing helped.

[terrafox]

We didn't touch anything, and today it fixed itself. ¯\_(ツ)_/¯