Q: Apple system applications (Appstore, iTunes, iCloud,etc.) inaccessible after 10.11.0 upgrade (untrusted certificate)
Apple's Appstore, Safari and iTunes applications (in addition to several third party apps like Chrome) are unable to connect to Apple due to a certificate issue. This issue started immediately following the upgrade to osx 10.11.0, El Capitain. After poking around various forums I have found similar but not identical issues, but it did lead me to look into the Keychain Access app and it appears my computer no longer trusts Verisign(?) as a certificate authority - which is what Apple uses. I'm doubtful that I'm being hacked, but I don't want to compromise my security. What should I do to restore my computer to being functional? How did this happen?
Edit: I found the List of available trusted root certificates in OS X El Capitan - Apple Support and none of certificates in the chain presented by Safari are included in the list of approved certificates listed in the tech support document that I linked. Is Apple serving up an old and busted certificate? Why does Firefox accept the certificate?
Message was edited by: ivar v Added link to trusted certs at bottom.
MacBook Pro (15-inch Mid 2012), OS X El Capitan (10.11), null
Posted on Sep 30, 2015 7:40 PM
Ok, it appears the solution (for me at least) was to open up the 'Keychain Access' app and from the 'login' keychain (top left corner) delete all the certificates on the apple.com domain (after exporting them as a backup). When your Safari / Appstore / icloud tries to connect again it will fetch new certificates and validate them, instead of checking against existings ones.
Posted on Oct 2, 2015 8:34 AM
