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Windows fails to load smart card reader drivers with Endpoint Protection installed.


Article ID: 172473


Updated On:


Endpoint Protection


With Symantec Endpoint Protection (SEP) 14.x installed, smart card readers fail to work properly due to a driver loading error.  The device will work again if unplugged or disabled and re-enabled within the device manager. 

When viewing the device in device manager, the following error appears:

This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

{Operation Failed}
The requested operation was unsuccessful.


A timing conflict between sysfer.dll and svchost prevents the necessary services/drivers from loading.


This issue has been resolved through content.  To resolve the issue, update the Application Control Data definitions to 190213022 or later.