Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
Starting with Microsoft Edge version 96, navigations that switch between Internet Explorer mode and Microsoft Edge will include form data. If you enable this policy, you can specify which data types should be included in navigations between Microsoft Edge and Internet Explorer mode. If you disable or don't configure this policy, Microsoft Edge will use the new behavior of including form data in navigations that change modes. To learn more, see https://go.microsoft.com/fwlink/?linkid=2174004 Policy options mapping: * IncludeNone (0) = Do not send form data or headers * IncludeFormDataOnly (1) = Send form data only * IncludeHeadersOnly (2) = Send additional headers only * IncludeFormDataAndHeaders (3) = Send form data and additional headers Use the preceding information when configuring this policy.