Originally Posted by
zo_zo65im I run OS X Yosemite V10.10.3 on a new iMac. If I click on Systems Preferences and then on iCloud, my Photos option remains checked for only a limited time before unchecking itself. Furthermore, all the photos have not sinced accross all my devices in spite having more than 16GB available. Any suggestion of how to remedy this?
I have since as ertained that I am not alone in this: see also
https://discussions.apple.com/thread/7039993. The problem does not occur on my Mac Mini, where photos works seamlessly. I am re-posting this in the hope that someone with a similar problem that was solved could assist