Anyone else having issues?
Yep, according to Xbox it is an ongoing issue.
http://support.xbox.com/en-US/xbox-live-status?icid=furl_servicealerts
Thank you for your report! We’re taking a look at this.
Yep same here
343 are currently tracking this issue here:
https://www.halowaypoint.com/en-us/forums/386c0102f55b48a3a0cc5412c3714e02/topics/halo-reach/b493bc4d-b8a4-4381-a09b-f1e697689d99/posts?page=1#post3