Whenever I open Messages, enter my credentials, and attempt to login the status indicator spins forever and the application never authenticates me and loads.
I had this issue on Mavericks and still have it on Yosemite. I tried removing the frameworks for Messages/iMessage in OS X and even reinstalled the OS from the recovery partition, but nothing works.
Has anyone else had the same issue and any luck with resolving it? Thanks for your time!