Custom httpModule

I have a custom httpmodule which reads HTTPContext.Current and uses the User retrieved from that for setting up Principal objects for that instance to be used by Application.
This is done in very natural way of implementing httpModule and code is written to setup Principal object with roles for that instance within application.AuthenticateRequest.

How do i make sure that my custom httpmodule is invoked post KENTOR.AUTHSERVICES implementation for OKTA so my Principal object gets set.

My App is a plain Web App and not MVC…