The {0} is verifying that you've got network connectivity and the permissions to access Active Directory. The tool needs ...

The {0} is verifying that you've got network connectivity and the permissions to access Active Directory.  The tool needs read access to the Active Directory schema as well as to the Configuration and Users containers. The tool also requires read access to each domain controller, global catalog server, and Exchange server that will be scanned. These permissions will be checked after you select where the scan will run.