Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
OBSOLETE: This policy is obsolete and doesn't work after Microsoft Edge 120. If you enable this policy, WebRTC peer connections can downgrade to obsolete versions of the TLS/DTLS (DTLS 1.0, TLS 1.0 and TLS 1.1) protocols. If you disable or don't set this policy, these TLS/DTLS versions are disabled. This policy was removed in Microsoft Edge 121 and is ignored if set.