To start the install process, the WebClient installer first checks if the user can perform an Administrator install. The installer checks if either of the following conditions is true:
The user is a member of a group that has Administrator rights.
The user has write-access to the HKEY_LOCAL_MACHINE\SOFTWARE registry key, the C:\Program Files directory, and the C:\Windows\system32 directory.
The user is a member of a group that has Administrator rights.
