This service is added during the installation of Lexmark printers. However if you uninstall the Lexmark printerdriver, the Lexbce Server service remains active. You cannot just disable it, because the Print Spooler service depends on this service.
Here is one method (which worked for me) to remove the service:
1. Remove the dependency by running the following command:
sc config spooler depend= RPCSS
2. Remove the Lexbce Server serices:
Download and run SysInternals AutoRuns. Go to the “Services” tab and rightclick the “Lexmark Lexbce Server service”. Now click “Delete”.