MSI - wait for uninstall to finish before continuing install

I have a new version of a program, which will remove previous versions... I use Wise Package Studio 7 Pro to manipulate the installation.

How can I tell the new.MSI to wait for the uninstall to finish? When I now installs the program it doesnt wait.

It is 2 programs that have to be uninstalled, but it seems like the install.msi want to continue to install after one of them has uninstalled.. And therefore fails.

Is there a parameter in the MSI-file to tell it to "wait until both programs have finished uninstalling"?


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Answers (3)

Posted by: anonymous_9363 10 years ago
Red Belt
If the previous versions were installed by MSI, you should be using the Upgrade table.

If your MSI is merely a wrapper for a bunch of executables (what I like to call "The Terminally Bone Idle" methodology) then you need to set the CA type to 'Synchronous'. See either the 'CustomAction' table page here or hit F1 when editing the CA in WPS's UI.
Posted by: polarman 10 years ago
Senior Yellow Belt
yes...the MSI-uninstall calls an exe-uninstall. I understand the "synchronous"-setting could fix this, but dont know how to do the settings in the customaction-table. Have to look into this more...
Posted by: anonymous_9363 10 years ago
Red Belt
If you have WPS, you don't need to edit the table directly. That's why I mentioned the UI (the 'MSI Script' view) and pressing F1. All the information you need is on the help page that appears.
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