Game disconnects exactly at 23 mins

For the past few days, every game I ply I get disconnected exactly at 23 mins. I can not get back into the game. Further more I can not log into the client until the game finishes. It says it can not reach the attentication server. Once the game is over I can long in as normal. I have zero loss of connection, and my pc sees zero change in usage or temps. No other game has this issue. Please help.