This new Content Requires a game update. To Access this Content please close the game, accept the update, wait for the update to download, and then restart the game.
So I started getting this popup every time I start the game, I didn't buy any dlc or download workshop items. I already tried verifying game files and reinstalling the game.
I'm thinking a steam client or Relic changed something about how DLC items are handled and I own a lot of them so one of them could be the issue.
If I could I would just ignore the message, but it seems like I can't get into any mp games anymore. Automatch gets to please wait and then throws me back to search for a game and this loops forever.
Any ideas?
EDIT: Solution to my problem posted below