And now I have it too. My certificates were about to expire, so I revoked the old ones, created the new ones, attached them to my profiles and downloaded them for use in my visual studio environment. I've had to delete my apple account and re-add it, however I too get the Authenication Error (XCode 7.3) message. Really need a solution to this soon. Cheers.
Topic:
Developer Tools & Services
SubTopic:
General
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