Time Machine encryption password

I have an encrypted external HD for my Mac. Despite many times requesting the saving of the password in Keychain it doesn't. To make matters more confusing sometimes on start-up I am asked for the password to unlock the HD so that Time Machine can start using it, sometimes it doesn't ask and sometimes if it asks and you do nothing after a period of time it starts without entering a password.


All other Keychain and Internet passwords work. I can find no evidence of a Time machine password in Keychain.

iMac 27″, macOS 10.15

Posted on Nov 12, 2020 11:42 AM

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Posted on Nov 12, 2020 11:50 AM

Search Keychain for the volume's name. You should find it with Kind='encrypted volume password'. You may have an old password still in keychain that's getting in the way. Try deleting it, or delete them all and start again.

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Time Machine encryption password

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