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View Full Version : ISPreventDowngrade not functioning, thinks newer version found?



DonAIR
02-14-2018, 09:09 AM
No matter what options we choose we get 2 outcomes:

1. It doesn't remove the old version and just installs the new version along side it
2. It complains that a newer version is found and exits out.

Old Version: 5.0.0.2793 (I know 4th digit is meaningless)
New Version: 6.0.0.xxx

We have tried pretty much every option under the Advanced/Common tab. We have recreated it. Still nothing. The product has a DIFFERENT Product Code and the SAME Upgrade Code. This works fine in our InstallScript MSI packages, but the Basic MSI packages fail with this.

DanGalender
03-07-2018, 11:29 PM
What does your Major Upgrade Item look like?

How about attaching a Windows Installer Log file?