Time Machine error: can't back up because disk no longer encrypted?

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Time Machine error: can't back up because disk no longer encrypted?

Hello, MacBook Pro (mid-2014), since yesterday I've received the following error message: "Time Machine did not back up because the backup disk was previously encrypted but is no longer encrypted." I restarted, did a software update (now on 10.15.3), no change. The backup is to a 5TB external drive (with 600GB still free) which I've never had any previous issues with and did not make any recent changes to.

Anyone else having this problem? Thanks.

MacBook Pro 15", macOS 10.15

Posted on Feb 22, 2020 11:29 PM

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Answer 1

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iancjazz Author

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31 points

Feb 25, 2020 1:41 PM in response to iancjazz

I was able to fix this issue by going to Select Disk in Time Machine settings, then removing the disk, then re-adding it and unchecking "encrypt." (Apparently my previous backups were not encrypted either, but I'm not worried about that.)

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