[wix-users] Executing installed exe as a first action during Unintall

[Hoover, Jacob]

asyncNoWait

You are telling Windows Installer to not wait until that CA is done before continuing on.

-----Original Message-----
From: wix-users [mailto:wix-users-bounces at lists.wixtoolset.org] On Behalf Of Farrukh Waheed
Sent: Tuesday, November 03, 2015 10:06 PM
To: WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
Subject: [wix-users] Executing installed exe as a first action during Unintall

Hi
In my msi, I have to call the installed exe file with some parameters, as a very first action of uninstall. Here is the code:

    <CustomAction Id="UnRegisterOnUninstallApplication"
  Execute="immediate"                  FileKey="MyProgram.exe"
ExeCommand="/unregister"  Return="asyncNoWait" />
     <InstallExecuteSequence>      <RemoveExistingProducts
After="InstallInitialize"/>      <Custom
Action="UnRegisterOnUninstallApplication"
Before="UnpublishComponents" >Installed AND NOT
UPGRADINGPRODUCTCODE</Custom>    </InstallExecuteSequence>

Although, it is scheduled Before UnpublishComponents, but issue is, at some computers, custom action is called during or after dependency dlls are uninstalled and so MyProgram.exe crashes here.
This is something seems unpredictable...

Can anyone please guide, if I'm missing something or doing something wrong???

Thanks a bunch.

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