For Spotlight on Windows to retrieve WMI information, Spotlight must be able to make a WMI connection between the Spotlight machine and the remote machine.
This connection is made with the user credentials specified for this profile. If this user does not have administrator rights on the remote machine then the connection will fail with an access denied error. To rectify this, either make the specified user an administrator or change the credentials to those of an administrator.
You can continue to diagnose a machine without a WMI connection however some information, such as the Disk Summary drilldown, will not be available for this machine.
Note: For troubleshooting information, see WMI connection problems.