I also have 200+ hours playing and I’ve never had a problem signing in before. All my other games that require some sort of server connection are fine including Vermintide 1.
This has just started happening for the first time today 16/09/2018 at about 3pm. I’ve verified my game cache files in steam, am using Google’s DNS server settings. Have flushed my DNS cache and have also checked that my router has UPnP enabled.
Is there anything else I can check?
My broadband connection is giving me a solid 400Mbps down and 200Mbps up.
I managed to get in once to play one run of Righteous Stand. At the end, the game kept looping back to the start of Righteous Stand after stating it was having difficulty connecting to the server again. Had to use Task Manager to kill the Vermintide 2 process.