Prohibit rollback

Prohibits Windows Installer from generating and saving the files it needs to reverse an interrupted or unsuccessful installation.

This setting prevents Windows Installer from recording the original state of the system and sequence of changes it makes during installation. It also prevents Windows Installer from retaining files it intends to delete later. As a result, Windows Installer cannot restore the computer to its original state if the installation does not complete.

This setting is designed to reduce the amount of temporary disk space required to install programs. Also, it prevents malicious users from interrupting an installation to gather data about the internal state of the computer or to search secure system files. However, because an incomplete installation can render the system or a program inoperable, do not use this setting unless it is essential.

This setting appears in the Computer Configuration and User Configuration folders. If the setting is enabled in either folder, it is considered be enabled, even if it is explicitly disabled in the other folder.

Supported on: At least Windows 2000

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\Installer
Value NameDisableRollback
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

This setting may be set for the machine or for the user.


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Administrative Templates (Computers)

Administrative Templates (Users)