I think software Update NDR26.58-33-9 killed the fingerprint sensor in my Verizon prepaid E4 Plus.

After updating the firmware, any app that uses fingerprint authentication immediately reported a mismatch before you could even touch the sensor. Attempting to add a fingerprint immediately fails before you can touch the sensor with an "Enrollment Not Completed" error.

The phone acts as if the sensor immediately returns a default value even with no finger on it.

I've rebooted, cleaned the sensor, deleted all existing fingerprints, tried safe mode, and problem still remains. Moto support wants me to factory reset and test again, but before doing something that drastic and time consuming, I thought I'd check if anyone else has the same issue first (or warn you all NOT to update until I figure this out!)