Uninstalling application

Good morning,

I have run into a challenge.

I am attempting to test for the presence of and uninstall a program in my setup.

I can successfully detect the previous version via GUID and if it exists, I then can successfully get the UninstallString from the registry into a variable and can successfully Run Command Line specifying that variable.

My problem is that the company that installed the application with an UninstallString = MsiExec.exe /I{GUID}. This launches a "Repair/Remove" instead of a "Remove". I can successfully run MsiExec.exe /X{GUID} manually form the command line. However, if I try to Run Command Line specifying MsiExec.exe /X{GUID}, the installation hangs and I have to cancel it from Task Manager.

What am I doing wrong. Seems weird that Run Command Line can successfully run an MsiExec command contained in a variable, but can't if the MsiExed command is entered directly in the Run Command.

Thank you for your help.

Hello,

We are using the following in all Consulting projects that move from .msi to .exe to uninstall the MSI product:

Run Command Line msiexec.exe /qn /x {GUID} [Wait]

Does this help?

BTW, this is an interesting success story where MSI uninstall is launched from the installer:

http://www.lindersoft.com/forums/showthread.php?t=19918

Works like a charm :)

Friedrich

Got it ... Thank you.

The /qn was the trick. Must not work with the full msi user interface.