Security manager 6.x
Launch the command prompt window (cmd.exe) by right-clicking and selecting "Run as administrator". That gives the command prompt window the Trusted Installer permission, which even the local administrator account doesn't have if UAC is turned on. Once the command prompt window is opened with that permission level, anything that is run from it runs as the logged on user but with the elevated permission. Now within the command prompt window the next step is to navigate to the folder containing the MSI and then launch it.
A second method for running the .msi is running as the administrator account using the following command. However this method requires knowing the administrator password.
runas /user:administrator "msiexec /i c:\netiq\install_file.msi?