Take a deep breath, because you're not permanently locked out. Apple is aware that a forgotten password can be a personal hell. As such, in addition to the company's security measures to protect ...

Next, you'll need to perform several account sign-outs, which are important if you're handing over your Mac to someone else: Sign out of iCloud at System Preferences > Apple ID > Overview > Sign Out.

Find System Preferences easily by clicking the Apple logo in the top-left corner and selecting System Settings. Navigate ...