UpdateText Property
Specifies text to be displayed in the Finished dialog box. Use it to inform the user about the availability of critical updates to the .NET Framework.
Remarks
For applications that require the .NET Framework, the default text is "Please use Windows Update to check for any critical updates to the .NET Framework." You can remove this message or replace it with a message of your own.
For all other applications, the UpdateText property is blank by default.