Handle BeginReuest event in Global.asax. This worked for me as rewrite module was absent on server.

protected void Application_BeginRequest(object sender, EventArgs e)
{                
    switch (Request.Url.Scheme)
    {
        case "https":
            Response.AppendHeader("Strict-Transport-Security", "max-age=31536000");
            break;
        case "http":
            var path = "https://" + Request.Url.Host + Request.Url.PathAndQuery;
            Response.Status = "301 Moved Permanently";
            Response.AddHeader("Location", path);
            break;
    }
}

Handle BeginRequest event in Global.asax. This worked for me as rewrite module was absent on server.

protected void Application_BeginRequest(object sender, EventArgs e)
{                
    switch (Request.Url.Scheme)
    {
        case "https":
            Response.AppendHeader("Strict-Transport-Security", "max-age=31536000");
            break;
        case "http":
            var path = "https://" + Request.Url.Host + Request.Url.PathAndQuery;
            Response.Status = "301 Moved Permanently";
            Response.AddHeader("Location", path);
            break;
    }
}

Handle BeginReuest event in Global.asax. This worked for me as rewrite module was absent on server.

protected void Application_BeginRequest(object sender, EventArgs e)
        {                
            switch (Request.Url.Scheme)
            {
                case "https":
                    Response.AppendHeader("Strict-Transport-Security", "max-age=31536000");
                    break;
                case "http":
                    var path = "https://" + Request.Url.Host + Request.Url.PathAndQuery;
                    Response.Status = "301 Moved Permanently";
                    Response.AddHeader("Location", path);
                    break;
            }
 
        }

Handle BeginReuest event in Global.asax. This worked for me as rewrite module was absent on server.

protected void Application_BeginRequest(object sender, EventArgs e)
{                
    switch (Request.Url.Scheme)
    {
        case "https":
            Response.AppendHeader("Strict-Transport-Security", "max-age=31536000");
            break;
        case "http":
            var path = "https://" + Request.Url.Host + Request.Url.PathAndQuery;
            Response.Status = "301 Moved Permanently";
            Response.AddHeader("Location", path);
            break;
    }
}