Hi

I'm currently using Umbraco 7.4.3.

I have the following:

protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) 
{
    ContentLastChanceFinderResolver.Current.SetFinder(new _404iLastChanceFinder());
    base.ApplicationStarting(umbracoApplication, applicationContext);
}

and

public bool TryFindContent(PublishedContentRequest contentRequest)
{
    if (contentRequest.Is404)
    {
        var root = contentRequest.RoutingContext.UmbracoContext.ContentCache.GetAtRoot().Single(x => x.DocumentTypeAlias == "domain");
        var notFoundNode = root.Children.Single(x => x.DocumentTypeAlias == "404ErrorPage");

        contentRequest.SetResponseStatus(404, "404 Page Not Found");
        contentRequest.PublishedContent = notFoundNode;
    }

    return contentRequest.PublishedContent != null;
}

On the production server, running IIS 7.5, it finds the proper nodes, but it displays the default .NET 404 error page and not the notFoundNode.

On my developer machine with IIS Express it works as intended.

Any help will be much appreciated.

Best regards Morten