Windows Vista has made huge improvements in providing readable error messages… here’s one exception that’s sure to be common. It happens if you try to run an unsigned application in Vista that requires elevation, but you have the “User Account Control: Only elevate executables that are signed and validated” policy enabled. Administrators will enable this policy in domain environments if they really want to control which applications users run with administrative privileges. Contact your IT department to get it signed. If you’ve been tweaking the Group Policy settings in your domain, go ahead and disable this policy if you want to run the tool.
More information is available at Spats WebLog Steve Patrick : Supportability and Vista UAC.
Thank you for saving my life with this tip! Seriously. This site has been bookmarked. :)
After running into this problem, I kept wondering why some applications wouldn’t install anymore when they could before. I should be more careful of what settings I change in the future. Thanks for the tip!
im getting this with the on-screen keyboard built-in to vista, anybody know why and how to fix it
It does occur when your application is not digitally signed.
I spent 10 hrs with India and problem still not fixed – told me to make new user to run streets & trips, signin and signout to use.
lol im MCSA certified and couldnt figure that out. just goes to show nothing beats experience. thanks!