The bioenrollmenthost.exe fault always pops up if you set up the Facial Recognition system in Microsoft Windows 10.
It is also possible that this error is due to driver malfunction or Windows update.
Generally, if you dont fix this error, Windows wont start.

The following part will show you some methods to repair bioenrollmenthost.exe error.
Step 1: Click theStartbutton and then clickSettings.
Step 2: ChooseUpdate and Security.

After you finish restarting, test whether you’re free to set up Biometric sign-in feature.
Step 1: Typecmdin the search bar, right-clickCommand Promptand clickRun as administrator.
If you are running Windows 7/Vista, you should skip to Step 3.

Step 3: Typesfc /scannowand pressEnter.
After you complete the process above, SFC will scan for BioEnrollmentHost.exe and other system file issues.
If this method fails, like try the method below.
Step 1: PressWindows Key + R, then typedevmgmt.mscand pressOKto enter theDevice Managerinterface.
Step 2: In theDevice Managerinterface, clickCamerasto expand it.
Step 3: Right-click your camera driver and chooseUpdate driver.
Step 4: SelectSearch automatically for updated driver softwareto continue.
Wait patiently, Windows will automatically look for any pending updates and install them.
If you are also bothered by this issue, you’re free to try the methods above.