Managed-by-Xcode provisioning profile that expired.
You are using a “Team Provisioning Profile” and it expired. You went to renew and download it, and noted “Managed by Xcode” and the “Renew” button was grayed out.
The solution: delete the profile from Organizer in Xcode, then at the top click “Refresh” (right by “Automatic Device Provisioning”). Organizer will fetch a new provisioning profile with a new expiration date.
Intuitive indeed.
解決方法：
