Synaptics fingerprint sensor not working after Windows 21H1 update

[mizunooto]

After updating to Windows 21H1, the built-in fingerprint sensor does not work. It appears in Device Manager but cannot be accessed by Windows Hello. There is no error message to say the sensor is missing.

I've deleted and reinstalled the driver software to no effect. I've downloaded the latest driver software from HP but it does not work with this OS version.

I found a previous post in the forum here:

https://h30434.www3.hp.com/t5/Unanswered-Topics-Notebook/Synaptics-Fingerprint-not-working-after-21H...

However, I get "Access Denied" when I go to this page. Makes me wonder whether HP is hiding something.

[praveenbv]

Hi@mizunooto,

You have done the basic troubleshooting as per the document and the notebook needs to check to get to know its hardware is faulty, not a software issue.

I'd suggest you contact HP in your region regarding the service options for your computer or HP Chat Support Team.

Hope this helps! Keep me posted.

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Have a great day! 

[mizunooto]

Having tried everything (adding another admin user, registry hacks, driver hacks, and a whole bottle of acetone - only kidding), I finally found the solution.
1. Shut down the computer.
2. Press the start button and immediately press and hold Esc.
3. Press F10 for BIOS and navigate to the Security tab.
4. Select Fingerprint Reset on Reboot and change to Yes.
5. Exit and restart, accept the cautions.

6. Set up Windows Hello Fingerprint.