They can be accessed through a pin-able toolbar at the top of PDF content. The PDF reader, built into Microsoft Edge, comes with the basic reading and navigation features, as Zoom, Rotate, Fit to page/width, jump to page, and search, among others. Documentation related to Accessibility scenarios that currently aren't supported can be found on the Microsoft Accessibility Conformance Reports blog.
XML Forms Architecture (XFA), is a legacy format of forms that isn't supported in Microsoft Edge.Note the following constraints for the current PDF reader: View Information Rights Management (IRM) protected files View Microsoft Purview Information Protection protected files across business tenants View Microsoft Purview Information Protection protected files in the same business tenant View and print local, online, and embedded PDF files The following table shows which channels and versions of Microsoft Edge support each PDF reader feature. This article applies to Microsoft Edge version 77 or later.