Seems like there is a bug with latest version
Unable to join games on the latest 10.1-alpha-1 release
Same issue, here are my client logs. To make it nice since the existing logs were large I closed the client, renamed the existing log file, then reopened the client and recreated the issue without doing anything else.
client.log
@closed said in Unable to join games on the latest 10.1-alpha-1 release:
happens all the time. faf sucks so hard nowadays. possible still ddos.
It's alpha release for a reason.
A new service used by this client stopped working for some reason, it worked when we tested it 
I will try to investigate later today
"Nerds have a really complicated relationship with change: Change is awesome when WE'RE the ones doing it. As soon as change is coming from outside of us it becomes untrustworthy and it threatens what we think of is the familiar."
ā Benno Rice
@brutus5000 Let me know if there is anything else that I can provide or do to help with troubleshooting