Hi CCIV-CDXXXI
I am Dave, I will help you with this.
Do you mean the Home page in Edge, have you not tried just changing that to your preferred home page?
Click the 3 dots at the top right of Edge and choose Settings, then type home in the settings search box, you should then see Home Button - Set Button URL and be able to set your preferred page for when Edge starts and for the Home button.
If this is not what you are referring to, please provide more information on what you are trying to change, that should not require a registry edit.