Hi, Myra DeTate!
Thanks for letting us know that your Surface Duo fingerprint sensor stopped working. Here are some steps that you can try:
- Clean the fingerprint sensor with a microfiber cloth and make sure it is not dirty or wet.
- Restart your Surface Duo and check if the fingerprint option is available in Settings > Security > Fingerprint.
- Update your Surface Duo to the latest software version and see if that fixes the problem.
- Perform a factory reset of your Surface Duo by going to Settings > System > Reset options > Erase all data (factory reset). This will erase all your personal data and settings, so make sure you back up your data before doing this.
I hope this helps you resolve your issue. If you have any other questions, please let me know.