Click on the services which you want to enable. After entering your ID, you will get a list of options. Click iCloud from the list, and you will be asked to enter your Apple ID. You can do lit by choosing the system preferences which you will get in the Apple menu on your Mac. Once your OS X is updated, turn on your iCloud account.
#Icloud mail sign in account update#
If available, update your OS X to the latest version.
If you are not using the latest version then go to Apple menu and in the software update look for if any latest version is available or not. Make sure you are using the latest version of OS X.