Unable to delete Apple WWDRC Certificate

Question

Recently Apple posted an announcement, according to this the intermediate certificate got expired on Feb 14th and has to be downloaded manually and should replace the older expi

Answer 1

I was able to delete the certificate by first viewing the expired certificate in system keychain and then deleting them. Then rechecking if the certificate was deleted from the certificate keychain as well. Then downloading new certificate and installing them. This might help you.