Dupa doua luni a venit si rezolvarea de pe Apple Support.
Firstly, get rid of CleanMyMac. It’s third party malware and challenges the permissions of your native applications and will cause problems. Apple recommends that you DO NOT run any anti-virus or sweeper software, because it causes underlying issues. Just uninstall it by dragging it to the trash. Even if you think it’s working right now, it’s eventually going to cause system slowness and issues with apps. Trust me on this.
Secondly: This is a permissions issue.
Restart your computer holding Command R
Select English as your language. Continue.
Up at the top left, choose ‘Utilities’ and ‘Terminal’
Type ‘resetpassword’ with no spaces or caps
Select Macintosh HD, then your username
At the bottom of this list select ‘Reset Home Folders and Permissions’ (no data loss, just a permissions reset)
After it’s done, re-start your computer, launch iTunes, then plug in your phone
File—Devices—- Sync
Should be resolved
Hope this helps. Now get rid of that awful third party software.