Microsoft Intune Out of Box Experience and Autopilot Hybrid AD Join

[inclusa-admin]

We are in the development phase of deploying a large number of new laptops to our user base. Due to the current circumstances with COVID and the changes we have made for out employees we would like to allow our users to receive the devices directly and utilize Intune for the deployment along with GlobalProtect pre-logon functionality. 

We currently have a working setup to utilize machine certificate based pre-logon along with SAML after Windows login. Our Intune profiles are successfully pushing the certificates and GlobalProtect Client before the end point attempts to join the domain, but the client never seems to attempt to connect to the portal. 

I was hoping others have gone down this path and had some insight on how to get this to successfully work or if it is even possible. Any information would be helpful since Microsoft has no good information on the process. Our setup is as follows:

PANOS - 9.1.3

GlobalProtect Client - 5.1.5

Certificate Chain on both the Firewall as well as all clients

Portal Configuration - pre-logon configuration agent first then SAML authentication second with auto generated cookies to manipulate the configuration agent being used.

Gateway Configuration - both portal agents point to the same gateway and require a client certificate with the root and intermediate configured within a certificate profile.

As mentioned the pre-logon method works without any issue in production, but when we attempt to deploy a workstation using Microsoft Intune Windows 10 Out of Box or AutoPilot the process fails. 

I see a lot of MS documentation about using UWP GlobalProtect and am not sure on if it is required.