Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
Specify whether to send Do Not Track requests to websites that ask for tracking info. Do Not Track requests let the websites you visit know that you don't want your browsing activity to be tracked. By default, Microsoft Edge doesn't send Do Not Track requests, but users can turn on this feature to send them. If you enable this policy, Do Not Track requests are always sent to websites asking for tracking info. If you disable this policy, requests are never sent. If you don't configure this policy, users can choose whether to send these requests.