Touch ID doesn't work for computer unlock or for keychain web app passwords after the latest Update. It's obviously turned on in settings. I set two new fingerprints after it stopped working to make sure it wasn't my finger causing the issue.
MacBook Pro 14″, macOS 14.4
Restarted multiple times, also tried switching touch ID "off and on again" in System Settings (between restarts) but still doesn't work. System has reverted to Apple Watch as an alternative to Password authentication.
Restarted multiple times, also tried switching touch ID "off and on again" in System Settings (between restarts) but still doesn't work. System has reverted to Apple Watch as an alternative to Password authentication.
Apple says that from time-to-time, and after certain major events, you will have to enter your password anyway, and touch-id will not be accepted alone.
after a Restart is one such time.
after a software update is one such time.
Sometimes updates to MacOS make older stored settings not work properly, or highlight a damaged setting that occurred long ago, but you were 'just getting by' with the old version of MacOS. The new version of macOS works differently, and the old setting may be deficient in some way.
The broad general solution to this is to make a detailed definite change that FORCEs an update to the settings file. It typically must be more extensive that just major feature on or off. Often the issue clears right up after that. If you can't come up with such a change, then change a minor setting to something different that you won't be keeping, save changes and close the widow, then re-open and change back to what you want in the long run.
touchID stopped working on MacBook after Sonoma update 14.4
