Bugs encountered by developer account for iOS development

The issue of using the developer account expires today, the file shows

In fact, today's problem is not related to this, even if the above shows that the issuer of this certificate is invalid, and sometimes can be used.

My situation here is more wonderful, just generated the developer account, show or "... Invalid ", really saw the ghost.

A bug or a hint message (after Google) is the expiration of the certificate expires in a real machine running in Xcode.

But after a bit of setup, it's back to work:

Bugs encountered by developer account for iOS development