Win32_SessionDirectoryCluster

This is new class to work with Terminal session directory service.
It allows to query information about all ts session in cluster. this
is extremly usefull to my project but i'm encountering some security
issue: query does not return results unless quering user is at least
local administrator on server where service is running.
Can security be tunned so regular (non-admin) can query information?
Thank you.

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