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  • Aileen 59 posts 79 karma points
    Apr 28, 2015 @ 18:12

    Error with Custom 404 Handler in Umbraco 7.1.8

    I have created a custom 404 handler which has been working fine up to now (for the past 2 months). It allows the content editor to create a content page within Umbraco and then select that page to be used as the 404 page.

    All of a sudden we are getting intermittent 404 errors on a few pages in the site. When I look at PublishedContentRequest, PublishedContent is null. If I reload the site then it seems to be able to find the content without issues.

    My code is as follows:

    public class PageNotFound : IContentFinder
            public bool TryFindContent(PublishedContentRequest contentRequest)
                if (contentRequest.PublishedContent == null)
                    var url = contentRequest.Uri.GetAbsolutePathDecoded();

                    var message = "Page not found: " + url;

                    LogHelper.Warn(MethodBase.GetCurrentMethod().DeclaringType, message);

                    contentRequest.SetResponseStatus(404, "Not Found");

                    var website = UmbracoContext.Current.ContentCache.GetById(contentRequest.Domain.RootNodeId);

                    if (website != null)
                        var page = website.GetProperty("PageNotFoundErrorPage") != null ? website.GetProperty("PageNotFoundErrorPage").Value.ToString() : "1";
                        int errorPageId;
                        int.TryParse(page, out errorPageId);

                        contentRequest.PublishedContent = UmbracoContext.Current.ContentCache.GetById(errorPageId);

                return contentRequest.PublishedContent != null;

    I can't understand why the published content is null. It's an intermittent issue so not related to site reload etc.

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