WIX How to execute custom action that runs installed file with admin priveleges

Question

In a Windows Installer msi package, created with WIX, I want to execute a custom action (written in c#) that executes a powershell script file that is installed by the installer.

The script needs admin privileges to run correctly.

When I execute the custom action before InstallFinalize, then the execution fails because the script is not yet installed. When I execute the custom action after InstallFinalize, then the custom action does not have admin privileges.

How can I execute a custom action that executes an installed file with admin privileges?

Answer 1

You need to Execute the CustomAction deferred to execute as part of the elevated installation transaction... and not impersonate. Read the CustomAction documentation.