Enforce upgrade component rules

This policy setting causes the Windows Installer to enforce strict rules for component upgrades. If you enable this policy setting, strict upgrade rules will be enforced by the Windows Installer which may cause some upgrades to fail. Upgrades can fail if they attempt to do one of the following: (1) Remove a component from a feature. This can also occur if you change the GUID of a component. The component identified by the original GUID appears to be removed and the component as identified by the new GUID appears as a new component. (2) Add a new feature to the top or middle of an existing feature tree. The new feature must be added as a new leaf feature to an existing feature tree. If you disable or do not configure this policy setting, the Windows Installer will use less restrictive rules for component upgrades.

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
  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
• Computer
  Prohibit flyweight patching

  Windows Installer v3.0