>> 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.
An update follows:
The .exe file is now executable.
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
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.