In this post, you’ll learn more about the Error ERROR_VOLMGR_MAXIMUM_REGISTERED_USERS – 0xC0380022 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
ERROR_VOLMGR_MAXIMUM_REGISTERED_USERS – 0xC0380022
Win32 COM Error Error Description
There is already a maximum number of registered users.