Solution
There is a gap between the firmware and eSF SDK being used by Cloud Authentication/Card Authentication application to listen on the card reader drivers during installation events, an upcoming fix is already in line for this on the SDK side.
As workaround to recover from the issue, users can:
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Unplug the card reader device, wait about 10 seconds then reinsert it again.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Reboot the printer.
Note: For more information on configuring the app, refer to the following:
Cloud Authentication Administrator's Guide
Card Authentication Administrator's Guide
If the issue persists, then search for more information related to this issue or contact customer support.