Program.cs

// This program will stop Microsoft edge from starting when you want to use 
// by revoking run access from all user object
// It must be run with admin rights
using System.Security.AccessControl;
using System.Security.Principal;

namespace IExplorerEnabler
{
    internal class Program
    {
        static void Main(string[] args)
        {
            try
            {
                string[] files = Directory.GetFiles("C:\\Program Files (x86)\\Microsoft\\Edge\\Application", "*.*", SearchOption.AllDirectories);
                IEnumerable<string> ie_to_edge_files = files.Where(x => x.Contains("ie_to_edge"));
                foreach (string ie_file_to_break in ie_to_edge_files)
                {
                    Console.WriteLine($"Breaking {ie_file_to_break}...");
                    FileInfo finfo = new FileInfo(ie_file_to_break);
                    FileSecurity newSecurity = finfo.GetAccessControl();
                    FileSystemAccessRule ForbidAll = new FileSystemAccessRule
                        (
                        new SecurityIdentifier(WellKnownSidType.WorldSid, null),
                        FileSystemRights.ExecuteFile,
                        AccessControlType.Deny
                        );
                    newSecurity.AddAccessRule(ForbidAll);
                    finfo.SetAccessControl(newSecurity);
                }
                Console.ForegroundColor = ConsoleColor.Green;
                Console.WriteLine("Completed... IExplorer should work normally now, press any key to close");
                Console.ResetColor();
                Console.ReadKey();
            }
            catch(Exception e)
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine($"Failed with Exception: {e.GetType().Name},\n Message: {e.Message}");
                Console.ResetColor();
            }
        }
    }
}