Step 1: Type Regedit in the Start menu or taskbar search box and then press Enter key. If you’re new to editing Windows Registry, we recommend you create a manual restore point before following these directions on your PC so that you can easily revert the changes with ease. Method 1 of 2 Remove Cast to Device using Registry Editor Method 2 – Remove Cast to Device from the context menu using ShellExView Method 1 – Remove Cast to Device from the context menu using Registry Editor This guide is strictly for File Explorer or Windows Explorer context menu in Windows 10. Please note that none of these methods help you remove Cast to Device from Microsoft Edge.