In this video, I will show you how to make Microsoft Edge the default browser through GPO. My XML file also makes the Edge the default PDF reader. You can delete the line in the XML that includes PDF. You can access the XML (Edge.xml) from my shared folder in the cloud.
About IceDrive: https://icedrive.net/
Link to my cloud drive (Icedrive) https://icedrive.net/1/297XnfCz5W