Loaded El Capitan 10.11 two days ago, Opening MAIL today I get this alert. and I have no access to shared iCloud mailboxes with iPhone (now on 9.0.2)
MacBook Pro (13-inch Early 2011), OS X Mavericks (10.9.1)
Please sign out of iCloud in its preference pane and sign back in. No data will be removed from the servers, and you will retrieve it by signing back in. That said, you should always have a current archiveof the data for safety's sake, even if you don't sign out.
If you use iCloud Keychain, when you sign back in to iCloud follow one of the procedures described in this support article to set it up on an additional device.
Please sign out of iCloud in its preference pane and sign back in. No data will be removed from the servers, and you will retrieve it by signing back in. That said, you should always have a current archiveof the data for safety's sake, even if you don't sign out.
If you use iCloud Keychain, when you sign back in to iCloud follow one of the procedures described in this support article to set it up on an additional device.
Whew, Thanks, I guess. MAIL was totally worse today wouldn’t open at all on MAC, on iPhone it is completely normal.
I found your answer on iPhone mail... and that was Really scary to Sign Out of iCloud and
have it tell me everything in it would be erased from my MAC (I have over 20,000 pics)
But I sucked it up and did it.
FYI: on Sign In it froze completely. I had to FORCE QUIT System Preferences to stop it.
Then Restarted (which it did WHOOT, (since I put 10.11 on Restart did not work It just froze and shutdown.)
This one worked.
Opened MAIL and it ‘thought’ a bit and BOOM 30 in inbox! ...
TY but that is scary.
MAIL error with El Capitan today NOT YESTERDAY
