I am unable to apply any group policy on windows 10 devices on corp network. I have created a test policy and linked to OU with security filtering for specific devices to receive policy - Computer Config > Admin Templates > Windows Components> Microsoft Edge > Allow InPrivate Browsing AND Computer Config > Admin Templates > Windows Components > MDM > Enable automatic MDM enrollment...

I have tried using 1809 and most recent 1903 admx templates in central store. 

Appreciate any help.