Prevent Internet Explorer security prompt for Windows Installer scripts

Supported OS tags: Windows10, Windows10RT, Windows11, Windows2000, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2003, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista, WindowsXP

This policy setting allows Web-based programs to install software on the computer without notifying the user. If you disable or do not configure this policy setting, by default, when a script hosted by an Internet browser tries to install a program on the system, the system warns users and allows them to select or refuse the installation. If you enable this policy setting, the warning is suppressed and allows the installation to proceed. This policy setting is designed for enterprises that use Web-based tools to distribute programs to their employees. However, because this policy setting can pose a security risk, it should be applied cautiously.

This policy has no additional user input fields.

• Computer
  Allow user control over installs

  At least Windows 2000
• Computer
  Allow users to browse for source while elevated

  At least Windows 2000
• Computer
  Allow users to patch elevated products

  At least Windows 2000
• Computer
  Allow users to use media source while elevated

  At least Windows 2000
• User
  Always install with elevated privileges

  At least Windows 2000
• Computer
  Always install with elevated privileges

  At least Windows 2000
• Computer
  Control maximum size of baseline file cache

  Windows Installer v3.0
• Computer
  Enforce upgrade component rules

  Windows Installer v3.0
• Computer
  Prevent embedded UI

  Windows Installer v4.5
• User
  Prevent removable media source for any installation

  At least Windows 2000
• Computer
  Prevent users from using Windows Installer to install updates and upgrades

  At least Windows 2000
• Computer
  Prohibit flyweight patching

  Windows Installer v3.0