501 Error code

Hello --

I am encountering the 501 error code when trying to do a scan on a Windows 10 system. The system in question has been updated

to the Windows 10 version 1709 release. I have confirmed the Windows Defender firewall is allowing port inbound connections through

the 5120 port, and the Remote Registry Service is running and on Automatic.

Additionally, I have gone into the Registry itself, and modified the Disabled setting for the RegistryIdle to 1. None of the steps that I have

taken have solved the problem. What other measures do I need to take?

Thanks.