View Full Version : upgrade doesn't work properly+downgrade question

12-21-2004, 02:29 AM

My setup.exe launches an msi file and if its version is newer than the one installed on the computer, it gives a message "You are going to upgrade..." and it does change the productVersion in the Add/Remove prog, but it really doesn't update files or registry keys. It did work but stopped and I can't understand why.
I have another question, if I may: When a newer version is installed, it gives a message: "A newer version is installed" and quit. Is there a way to give the user a Yes/No option to downgrade?

Thank you very much

01-05-2005, 07:41 AM
It is not possible to downgrade the installation. I believe that you want to perform a minor upgrade.
1) Check if the previous files Never Overwright property is set to "yes".
2) Is the Package code changed while building the newer version?
Try using Msi Command line parameters like REINSTALLMODE =vomus and REINSTALL="ALL".
I hope this helps.