This sounds like a Group Policy restriction. To access the Group Policy manager, do the following:
- Click on the Start button and then click on Run...
- In the Run... dialog box, type gpedit.msc then click OK
This will launch the Group Policy Editor application.
On the left-hand side, there will be a "tree" of various aras in the Group Policy. Expand Local Computer Policy
, followed by Computer Configuration
, then Administrator Templates
, then Windows Components
, and finally double click on Windows Installer
Click on the Disable option to remove the installer restriction (see the image), then click on OK
As point of interest, the Windows "Administrator" account is not an all-access one like the root account on Unix/Linux. On Windows, the only account with full access to everything is the System account, which can only be used by Windows itself.
Edited by Amazing Andrew, 21 April 2008 - 08:56 PM.