Disconnect any paired Bluetooth Devices (if necessary).Ĭlick the Apple menu icon (), select System Preferences, and then click Bluetooth.Select your iMessage account, and then click Sign Out.
Open the Messages app, click Messages, choose Preferences, and then click Accounts. When prompted, provide your Apple ID and password, and then click Deauthorize.Ĭlick the Apple menu icon (), select System Preferences, choose iCloud, and then click Sign Out. From the menu bar at the top of the screen or at the top of the iTunes window, choose Account, select System Preferences, then choose Authorizations, and finally click Deauthorize This Computer. Now that you have backed up your important files, you must disable all of the services associated with your Mac, especially if you plan to give away or sell it.
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