Macbook Pro, 2011
OS X 10.10.5
After startup and logging into iCloud with my Apple ID, why am I immediately prompted up to four times to log in with my Apple ID again? Sometimes I play along and log-in with each prompt to see if it will resolve issue the machine is having with the cloud. Most of the time I cancel each prompt, but it's annoying and seems wrong that I have to play this little game at every startup. I do have an iMac and iPhone sharing the same account. Any clues would be helpful.
MacBook
Pro, OS X Yosemite (10.10.4)