View Full Version : Message box problem in major upgrade

03-27-2006, 02:16 AM
Hi all,

I'm trying to perform a major upgrade of the old setup, but in all msi versions I have a remove warning message box, which is shown during uninstallation.
So this message box is also appears during major upgrade, but I don't want it to appear.
I tried to change the major upgrade settings "Completely uninstall then install" to "Install then remove unneeded files", but the result is the same.
Maybe it is possible to disallow message boxes??
Please, can anyone help me?


05-08-2006, 08:02 PM
Did you change the Product GUID?

For major upgrades you need to change the product GUID but leave the Upgrade GUID the same as your previous installer.

If you do not change the Product GUID then a message saying you already have this product installed will appear.