iOS 7.0 No code signing identities found

Question

• certificate is valid
• xcode 5
• iOS 7

Code Sign error: No codesigning identities found: No codesigning identities (i.e.

Answer 1

Obviously this issue has different causes. :)

For my case, my account log in expired... I solved it by simply:

XCode -> Preferences -> Account -> Apple IDs -> Select the related ID and renew the log in...

Hope this helps!