Server 08 - "Administration priveliges are required."

I'm a domain admin. I also have rights to the machine as an admin.

Why am I having to "right-click > run as Administrator" in order to run some programs, but not others?

 

The program I'm using in particular is: HP StorageWorks Library and Tape Tools. Strange thing was I was perfectly able to install it without my credentials being questioned.

And I'm RDC'd into our server using my personal login, which is listed in the domain admins and administrators groups.

 

From Technet
To help prevent malicious software from silently installing and causing computer-wide infection, Microsoft developed the UAC feature. Unlike previous versions of Windows, when an administrator logs on to a computer running Windows Vista, the user’s full administrator access token is split into two access tokens: a full administrator access token and a standard user access token. During the logon process, authorization and access control components that identify an administrator are removed, resulting in a standard user access token. The standard user access token is then used to start the desktop, the Explorer.exe process. Because all applications inherit their access control data from the initial launch of the desktop, they all run as a standard user as well.
After an administrator logs on, the full administrator access token is not invoked until the user attempts to perform an administrative task.

 

Ha ha!
It seems that according to Microsoft program installation does not require full administrator's token as CUISTech "was perfectly able to install it without my credentials being questioned. "...