"An unknown error" when trying to sign in to my Apple ID on mac.
Hi - I have "An unknown error" when trying to sign in to my Apple ID on mac. No problem on my iPhone. Discovered problem 2 days ago, as various emails could not update. Eventually managed to sign out and then create new password - but reoccured.
I had managed to check emails after the reset, which was problematic, but mail would not close down. Had to force shut down. Re-opened MacBook Air today, to find same problem again. iCloud and gmail accounts not opening, can't access keychain etc. Most of my documents and photos are stored on iCloud, so could really do with help please. TIA