Wondering whether this is some protection Apple use to identify genuine Macs?
Code:
akd: (AppleIDAuthSupport) [com.apple.AppleIDAuthSupport:general] SendRequestAndCreateResponse: submissing a request to: <private>
akd: (AppleIDAuthSupport) [com.apple.AppleIDAuthSupport:general] -[AIASSession URLSession:task:didReceiveChallenge:completionHandler:]: checking pinning
akd: (AppleIDAuthSupport) [com.apple.AppleIDAuthSupport:general] -[AIASSession URLSession:task:didReceiveChallenge:completionHandler:]: use credentials
akd: (AppleIDAuthSupport) [com.apple.AppleIDAuthSupport:general] -[AIASSession URLSession:dataTask:didReceiveData:]: <private> got more data: 657 bytes
akd: (AppleIDAuthSupport) [com.apple.AppleIDAuthSupport:general] -[AIASSession URLSession:task:didCompleteWithError:]: <private>: <private>: (null)
akd: (AppleIDAuthSupport) [com.apple.AppleIDAuthSupport:general] SendRequestAndCreateResponse: completed request <private>
akd: (AppleIDAuthSupport) [com.apple.AppleIDAuthSupport:general] AppleIDAuthSupport: setError: 2:selected protocol key missing
akd: [com.apple.authkit:core] Authentication with server failed! Error: Error Domain=com.apple.AppleIDAuthSupport Code=2 UserInfo={NSDescription=<private>, Status=<private>}
akd: [com.apple.authkit:core] Attempting to show login error: Error Domain=AKAuthenticationError Code=-7018 UserInfo={NSLocalizedDescription=<private>, NSUnderlyingError=0x13e821f80 {Error Domain=com.apple.AppleIDAuthSupport Code=2 UserInfo={NSDescription=<private>, Status=<private>}}}