Lexmark CS820
Updating the printer firmware from Firmware-3 (FW3) to Firmware-4(FW4 version 040.086) breaks the Active Directory authentication, which locks users out of the printer.
Update the printer firmware to the latest version found in the driver and downloads section which will fix this issue.
Refer to Firmware update instruction for steps on how to update the printer firmware.
LEGACY ID: SO8473
Updating the printer firmware to latest version.
Steps on how to update the printer firmware via FTP (File Transfer Protocol).