M4 Mini on Sequoia keeps asking for Time Machine volume password

mikethemartian wrote:

I recently migrated from an old Mac Mini on Catalina to a M4 with Sequoia. I seem to be coming across a few bugs. One is related to it repeatedly asking me for the password to my Time Machine volume even though I tell it to save it in the Keychain app. The TM volume was the one I originally used for my Catalina machine and I used it to migrate to the M4 and authorized the new M4 to claim the TM volume as it own. It doesn't happen every single time but it did happen several times in a row when I would reboot.

I looked in the Keychain app and it looked completely empty. Then I looked at it again later and it had many keys listed. I don't know if maybe the M4 tries to access the TM volume too early after reboot before the Keychain app has chance to respond. I'm curious if anyone else has seen this same behavior.

The Password.app has replaced the Keychain Access.app

Use the Passwords app to create, manage, and share passwords and passkeys across Apple devices - Apple Support

if you continue to have an issue, earse the TM drive and start anew.

Erase and reformat a storage device in Disk Utility on Mac

Erase and reformat a storage device in Disk Utility on Mac - Apple Support

Verify your software is up to date…

The current stable release of Sequoia including bug fixes, security updates is macOS 15.4

Keep your Mac up to date - Apple Support

Keep your Mac up to date - Apple Support