Disable Windows Installer (All Windows)
This restriction allows you to prevent users from adding and removing software applications with Windows Installer.

Remote Administration of Windows Installer (Windows 2000/XP)
This setting allows administrators using Windows Terminal Services to remotely install and configure software using Windows Installer.

Windows Installer Logging (All Windows)
Windows Installer can use logging to help assist in troubleshooting issues with installing software packages. You can enable verbose logging with this setting.