Connection Issues

I can no longer connect to any multiplayer features on my PC only. everytime i go to play social games i get “CONTACTING SERVER - Connecting to transport service. Please wait” but its infinite. Why is this happening now? i was playing on the wednesday the 19th, then on the 20th i cant connect, was there a stealth update that broke my game?

This issue should be resolved now, but if you are still experiencing problems please make sure and file a bug report about this on the Halo Support site: