P3P is no longer supported

The Platform for Privacy Preferences 1.0 (P3P 1.0) is obsolete in Windows 10 (Microsoft Edge and all modes of Internet Explorer 11 for Windows 10).

Support for P3P 1.0 has been removed in Windows 10 and will have minimal ongoing servicing for previous versions of Windows. Recommended practice is to avoid deploying P3P privacy policies on your site.