Codesign error: Certificate identity appearing twice

Question

CodeSign error: Certificate identity 'iPhone Developer: XXXX (12345678)' appears more than once in the keychain. The codesign tool requires there only be one.

So I go to my keychain and delete it. But I get this error every time I restart Xcode 4 and some app is adding the expired old certificate back into keychain. Any ideas why and which app?

Answer 1

I just had the same problem. It has been fixed. It came after I submitted an app and installed a few certificates to sign the app.

Quick Fix: Open up KEYCHAIN ACCESS > click on MY CERTIFICATES> in there you will probably see iPhone Developer: . You will probably see it TWICE! Select the one with the earliest Expiration date, right click and select DELETE.

Restart Xcode if you haven't. Works now. :)

Happy Coding.

Answer 2

I think I figured out why the simple delete is not working. Because the dev certificate is still stored in the provision profile, when I close/re-open the Xcode after deleting the certificate in Keychain, I saw the old certificate come back. So I delete it again. It worked.

The simple delete the profile solution did not work for me.

Solution that worked in my case:

1. Quit Xcode
2. If the Keychain access is open, keep it open.
3. Launch Xcode now.
4. See that the certificate Xcode was complaining about will be re-added into the keychain at launch from its cache.
5. Go ahead and delete it.
6. Compile and happy coding.