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Uninstallapplication function

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Posted 19 September 2011 - 13:48


I'm trying to uninstall an existing application using uninstallapplication function but its not working may be cause im not passing correct parameters, here is some of my trials:
szInstalledVersionGuid = "{41C6757F-36D9-4E1D-9D2E-A64BB27BF141}";
szParams = "/x /qn /s";

2- UninstallApplication("{41C6757F-36D9-4E1D-9D2E-A64BB27BF141}","/passive;/uninstall",LAAW_OPTION_WAIT);
3- added the option |LAAW_OPTION_HIDDEN

could anyone who have used it please let me know how to use it.

Thanks in advance

Stefan Krueger

Stefan Krueger


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Posted 20 September 2011 - 10:34

Do I understand correctly that in your Basic MSI project you have a InstallScript custom action where you call UninstallApplication in order to remove another setup which was a pure InstallScript setup?

I don't think that "/x /qn /s" are valid for InstallScript setups, and they shouldn't be necessary if the uninstall registry key already includes parameters to uninstall. Could you please post the contents of HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\{41C6757F-36D9-4E1D-9D2E-A64BB27BF141}

And how is it not working? Do you get an error message?

P.S. I have closed your other duplicated questions to avoid confusion.