Save copies of transform files in a secure location on workstation

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

This policy setting saves copies of transform files in a secure location on the local computer. Transform files consist of instructions to modify or customize a program during installation. If you enable this policy setting, the transform file is saved in a secure location on the user's computer. If you do not configure this policy setting on Windows Server 2003, Windows Installer requires the transform file in order to repeat an installation in which the transform file was used, therefore, the user must be using the same computer or be connected to the original or identical media to reinstall, remove, or repair the installation. This policy setting is designed for enterprises to prevent unauthorized or malicious editing of transform files. If you disable this policy setting, Windows Installer stores transform files in the Application Data directory in the user's profile. If you do not configure this policy setting on Windows 2000 Professional, Windows XP Professional and Windows Vista, when a user reinstalls, removes, or repairs an installation, the transform file is available, even if the user is on a different computer or is not connected to the network.

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
• Computer
  Prevent Internet Explorer security prompt for Windows Installer scripts

  At least Windows 2000
• 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