Can't join any lobby in CS:GO

[Grzegorz Braun]

Hello,
I wrote with this issue to Steam Support, but they told me that they have no idea how to resolve my problem and recommended to write here and check if someone had the same problem.
I have a problem with joining any lobby in CS:GO.
When I am trying to join it i get the information:
"Disconnected
Failed to join session. Please try again"
Just like on a photo in the link: https://image.ibb.co/b7yxjm/snapshot0000.jpg
But on the photo there is an info in Polish language. But previously I changed the Steam language and it was exactly as I quoted above in English.
I get a problem even when I am invited to lobby and when I accept the invitation I get the same error.
However I can create a lobby and invite somebody to it. Unfortunately I cannot join any lobby which I didn't created.
There is no problem with starting any competitive or deathmatch game, but just with joining the lobby. I also cannot join the private server - when my friend creates a game on a map from the workshop and I choose the option "join" I get the same error. However I can join if he for example play deathmatch.
I tried to verify integrity of game files but it didn't resolve the problem. The problem exists only on my account. When I log to other account from the same computer there is no problem with joining the lobbies.

Please tell if You had the same problem and how did You resolve it.
Best regards,
Greg

[Grzegorz Braun]

Nobody had a problem like that? :(

[Cathulhu]

How about you post in the discussion hub of the game you are talking about?

http://steamcommunity.com/discussions/#games

[Elvin]

I also have the same problem. Did u get to know how to fix it?

[Grzegorz Braun]

Hey dude,
My problem is still not fixed. I found one topic on this forum from this year and the author had the same problem - he wrote after some time that you have to wait one week and it will be fixed itself. Unfortunately now it is 2 weeks from the time the problem appeared and it still doesn't work.
Finally after a few messages I get some advice from support. They told me to do some tests - check if the problem exist on my account but on other computer and delete the config (after reseting Steam the new config will automatically appear). I am going to test it tomorrow.
I will let You know.
ciao!

[Grzegorz Braun]

TBH i didn't have time to check it but today I accidentally accepted an invitation to a lobby and i noticed that it works. About 3 weeks after the problem happened.
Good thing is that it works. Bad - that the support still won't know about the problem :(