If you upgrade to two-factor authentication, you can’t log in to your Mac with an iCloud password

Apple slipped in a change in April 2016 that’s affecting people who change the protection on their Apple ID accounts.

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Apple

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Glenn Fleishman is the author of dozens of books. His most recent, updated for iOS 14, iPadOS 14, and Big Sur, are Take Control of iOS and iPadOS Privacy and Security, Take Control of Your Apple ID, Second Edition, and Take Control of Wireless Networking and Security. He’s a senior contributor to Macworld, where he writes Mac 911.
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