I am also seeing this issue when trying to do a Windows Update Scan on machines that are placed outside of the standard group. The error message i am seeing is as follows.
Source: EminentWare Agent
Device: XXXXXX ( removed )
Details: WMI Select Query
WMI Select Query operation failed: ewException caught: [WmiUtil::RunWmiQuery - failed with error Unknown error 0x80240FFF], File: WmiSelectQueryHandler.cpp, Line: 123
Machines that are in the original group that was set up for workstations work with no issues. Just seems to be this newly created group that has been in use for about 6 months.
any help would be greatly appreciated.