Is there any issue in executing Installvalidate Custom Action after InstallInitialize in InstallShield basic MSI?

Question

My MSI installer is showing reboot required dialog box during un-install since my custom action to stop service is scheduled after InstallValidate. The service stop CA is a deferred action to elevate privileges so it is scheduled after InstallInitialize. I need to schedule the InstallValidate CA after my service stop CA to prevent showing the reboot required dialog box. Is there any problem in placing InstallValidate CA after InstallInitialize?

Answer 1

It won't work.

InstallValidate is an immediate action. So it will always run before InstallInitialize which is deferred.

The correct approach is to make your service stop itself. For this you can use a global event or a trigger handled by your service. This way you don't need Administrator privileges.