Why can I not register Touch ID after authorized apple repair?

On my MacBook Pro 13-inch, 2016 my keyboard has been replaced by an authorized apple repair agent. (They said it will be sent to Apple).

At first when i received it back, Touch ID could be used normally. I didn't need to re-register Touch ID.

After 2 days, Touch ID is not working anymore. I receive the following messages:

> No Touch ID registered

> But: also the max count of finger prints are registered. I can't register a new finger print.

How should I go forward?

Would a complete new set up of my MacBook Pro help?

Do I need to send it to Apple again?

MacBook Pro 13", macOS 10.15

Posted on Jan 26, 2020 6:02 AM

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7 replies

LD150

Level 10

100,149 points

Jan 28, 2020 2:07 AM in response to Markus Witschi

I prefer shichimi's plan B too

before that

Shut down and boot up with shift key held down throughout. that is Safe Boot.

Then restart.

If not, try creating a new admin account and see if it works ok. If it does then it is a user account problem.

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Shichimi

Level 4

3,138 points

Jan 28, 2020 1:39 AM in response to Markus Witschi

Plan B. I recommend going back to the repair shop that handled your keyboard replacement.

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Jan 28, 2020 12:43 AM in response to LD150

I really appreciate your support.

I didn't find any hint about TouchID with the system and personal library. I also doubt that macOS stores my fingerprints there.

My plan A:

I will now set up a new macOS on an external drive and check if i can register my fingerprints.

If this will work, I will set up my MacBook again.

My plan B:

Engage Apple support.

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LD150

Level 10

100,149 points

Jan 27, 2020 3:18 AM in response to Markus Witschi

Can you delete the old prints?

http://osxdaily.com/2018/09/05/how-delete-fingerprint-mac-touch-id/

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Jan 28, 2020 12:27 PM in response to LD150

I will now move on to plan B.

Results of plan A:

Setup of an Admin Account: same issue, new Touch IDs cant be registered, while the existing ones are not shown and can't be deleted
Reboot in save mode: Touch ID is not available. ReReboot: Issue persists.
Setup of on an external HDD (ok it was not a fast one): did fail at all with macOS Catalist

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LD150

Level 10

100,149 points

Jan 27, 2020 6:20 AM in response to Markus Witschi

Doing my best with only restaurant German.

I was referring to the maximum of 10 prints registered. Gotta clear them somehow.

Look into your ~/Library for something to clear out if the Sys Prefs do not allow it.

Or return it to the repairer.

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Jan 27, 2020 4:04 AM in response to LD150

No. Please refer to my print screens. (No Touch ID registered)

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Why can I not register Touch ID after authorized apple repair?

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