Lost Touch ID on iMac since Tahoe

Touch ID not working since I installed Tahoe, done some checking around but no obvious answer.

iMac 24″, macOS 26.0

Posted on Sep 19, 2025 6:16 PM

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Posted on Sep 19, 2025 6:47 PM

I had the same issue. Happened shortly after Tahoe upgrade but not sure that was the reason. I resolved it by some combination of the following: turn keyboard off and back on (power switch on front - closest to screen - right edge of keyboard); restart iMac; connect keyboard to iMac with cable; set up Touch ID again.

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Question marked as Top-ranking reply

Sep 19, 2025 6:47 PM in response to derekfromwhangarei

I had the same issue. Happened shortly after Tahoe upgrade but not sure that was the reason. I resolved it by some combination of the following: turn keyboard off and back on (power switch on front - closest to screen - right edge of keyboard); restart iMac; connect keyboard to iMac with cable; set up Touch ID again.

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Lost Touch ID on iMac since Tahoe

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