trustedinstaller

What is known about this acct: TrustedInstaller?
A member of the Admin gp cannot run a .exe file, and the file's Security shows an entry for TrustedInstaller.
Disabling UAC does not solve the problem.
TIA

What is known about this acct: TrustedInstaller? A member of the Admin gp cannot run a .exe file, and the file's Security

shows an entry for TrustedInstaller. Disabling UAC does not solve the problem. TIA
An update follows: The .exe file is now executable.
Solution: The file's property General tab had a line at the bottom as follows: (below the Attributes line is a Security line) "This file came from another computer and might be blocked to help protect this computer" And there is an "Unblock" button
Clicking on the Unblock button solved the problem.
Cause: I had copied the file from another op system on a dual boot setup.