Backups error out using external hard drive or Time Machine

MacBook Air running Sequoia 15.3.2. Backup to hard drive won't complete; "Time Machine did not finish backing up because some files were unavailable. Backups will resume when your Mac is unlocked."

Mac is not locked, can't find anywhere else to try to unlock. Used to work just fine. Is this a Sequoia glitch? Previous threads indicated wiping items didn't help. What will work? Thanks!

MacBook Air 15″, macOS 15.3

Posted on Mar 28, 2025 12:35 PM

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1 reply

Mar 29, 2025 6:12 AM in response to frustrated-in-WI

frustrated-in-WI wrote:

MacBook Air running Sequoia 15.3.2. Backup to hard drive won't complete; "Time Machine did not finish backing up because some files were unavailable. Backups will resume when your Mac is unlocked."
Mac is not locked, can't find anywhere else to try to unlock. Used to work just fine. Is this a Sequoia glitch? Previous threads indicated wiping items didn't help. What will work? Thanks!


See if there is anything here—

ref: Time Machine troubleshooting on Mac - Apple Support




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Backups error out using external hard drive or Time Machine

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