Signals premature termination of the installation process, which might be caused by an installation or uninstallation failure or by the user canceling the [un]installation. The extension DLL can use this opportunity to roll back its actions, if any. Internal clean up should wait until TIXMSG_TERMINATE.

Action scheduling

This action may occur at any time after TIXMSG_START_PROCESSING.


Not used

Result code

If this message is handled, pMessage->lResult must be set to one of the following result codes: