Code Sign error: Certificate identity 'iPhone Developer: My Name (xxx)' appears more than once in the keychain

Question

I m stuck with this error:

Code Sign error: Certificate identity \'iPhone Developer: My Name (xxx)\' appears more than once in the keychain. The codesign tool requir

Answer 1

I had the same problem. I checked every related question I could find on SO and followed the steps - but had no luck. It kept telling me that my distribution cert appeared more than once, but I could see that it only appeared once. I revoked certificates and closed X-Code many times, but it turned out that there was a 'hidden' certificate. I had an older Distribution Certificate that was not in the login keychain. It was in an unnamed keychain. When I deleted that one, it worked! So its worth looking around keychain access thoroughly!