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ussraf
Level 6
‎Feb 19, 2009 03:07 AM

In Upgrade Install, Which Version of Custom Action Will Be Used?

Hi,

I got confused when doing an upgrade install.

Say if I have a custom action CustomAction1 which is implemented in myCA.dll(stored in binary table). Then, I have a newer version of IS project and also CustomAction1 is updated with newer code in the new versioned myCA.dll.

Now I start an upgrade install, which version of custom action InstallShield or Windows Installer will choose?

Thanks.
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KathyMorey
Level 10
‎Feb 19, 2009 08:12 AM

When you are upgrading, the custom actions are executed from the project doing the upgrading (the new one). However, if you are doing a major upgrade, when the older version uninstalls, it will use the old msi to do that, so during the uninstall the older version of any custom action will run.
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ussraf
Level 6
‎Feb 19, 2009 10:05 AM

Thank you Kathy. This is great answer to me.
Though it would be great if InstallShield or Windows Installer can provide some documents on this.:rolleyes:
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