eCommerce Integrations

Common DotNetNuke / DNN Errors

Updated  |  4 min read
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Key Takeaways
  • DotNetNuke (DNN) is an open-source content management system (CMS) based on Microsoft's .NET technology. It enables users to build and manage websites and web applications efficiently.
  • With a user-friendly interface, DNN allows for easy creation, editing, and publishing of web content, making it a suitable choice for users with varying levels of technical expertise.
  • Its modular structure lets users extend functionality through plugins and skins. The platform is renowned for its security features, including granular permissions, and it actively receives security patches.
  • DNN also boasts a strong community of developers and users, contributing to a rich ecosystem of extensions and themes.
  • It supports multiple sites from a single installation, making it an excellent choice for businesses. For those seeking additional features and support, DNN offers Evoq, a premium version with enhanced capabilities.
database failed in an application pool

DotNetNuke (now called DNN) is a Content Management System (CMS) that has the ability to create dynamic professional looking websites. Now, there is no such thing as a perfect CMS tool, and errors can arise. Nuances can slow your system down and prevent your website system from functioning altogether. DotNetNuke errors aren’t regular occurrences, but some do happen more often than others. Listed below are some of the most common errors that may occur and the appropriate steps to take in order to solve them.

If you're having trouble with more complicated errors or implementing a more robust DNN framework, contact Clarity to get the DNN solutions your platform needs.

DNN is based on an ASP.net framework. To learn more about how Clarity can help you accomplish your goals with this technology please visit our Resource Center.

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Server Error in '/' Application

Server Errors usually occur when individuals are first learning how to use DNN. The Server Error in ’/’ Application affects people who do a quick read of the directions for the DNN installation. It happens with source one and appears when an application is clicked on for the initial time on the browser. This is a relatively easy problem to fix via the web.config file.

If you're still having trouble, make sure to ascertain the problem and then check out the ASP.Net forums and simply ask an expert for some help!

Parser Error

Another DNN error that can occur is the Parser Error. This error typically occurs when you are missing a web.config file. When you get this error you will see "Could not load type DNN.Common.Global".

To fix this problem, just copy and paste the development.config file and rename it to web.config. Then just install DNN. If you're still having difficulty, check the ASP.NET forum. While no one's project is exactly the same, chances are someone's had similar problem before and their solution could help you.

Caching Trap

As many people already know, DNN is often used to improve the way regular caching modules work. A module caching starts off with a default value that is set by the system but the value of a module can be overridden by changing the digits in the settings section for modules. When different modules are developed, programmers can sometimes confuse the new module that they are developing with another one. This can occur when they are logged in as the admin. Simply make sure you're logged in to the proper module user and proceed.

As many people already know, DNN is often used to improve the way regular caching modules work

Error with Starterkit Templates

The starterkit template typically has a default value of 60 for module caching. When a new value greater than zero is used, the module will utilize caching. The problem is the caching has not been enforced for individuals who are the Host or Admin.

You can easily prevent this DNN error from occurring by having a value of zero set in the manifest. Some developers and programmers even delete the node completely right before the module is installed onto to the website. Even if the module has been installed, the numbers in the individual case can be altered to zero as well.

DNN Error from Moving Host

A DNN error can also occur when you are moving your site to a production site from a local host. After you try to do this you can get a message that says "DNN Error: An Error has occurred. An Error has occurred." This error can be fixed in several ways. One cause of this DNN error is that your connection strings aren’t properly set. Another cause of this error is that you are missing a skin file.

DNN errors are usually quite easy to fix. If you are unsure of what is causing the error then you can even ask for help from people in the DNN community, the people in the community are very friendly and always willing to help other individuals out.

 

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FAQ

 

DotNetNuke (DNN) is a versatile content management system (CMS) built on Microsoft's .NET framework. Initially released in 2003, it allows users to create and manage dynamic websites without extensive coding knowledge. DNN is popular among developers and businesses for its ease of use, customizability, and robust security features. With a modular architecture, it enables users to develop feature-rich websites by adding or creating various modules and skins.

It also offers a community version which is open-source and free, as well as commercial editions with added functionalities and support. Its extensible nature, coupled with a supportive community and marketplace, makes DNN a competitive choice for developing a wide range of websites, from small personal blogs to large-scale enterprise portals.

 

Module permissions in DotNetNuke (DNN) are settings that control the access and roles associated with different modules on a DNN website. Through module permissions, administrators can specify which user roles, such as administrators, registered users, or guests, have the ability to view, edit, or manage specific modules. This ensures that only authorized users can interact with the content and features of a module.

By properly configuring module permissions, website administrators can enhance security, streamline content management, and create a more personalized user experience based on the roles and access levels of different users.

 

There could be several reasons why you are unable to upload files or images to your DNN (DotNetNuke) site:

  • File Size Limit: The file you are trying to upload may exceed the maximum file size allowed by DNN or the web server.
  • File Type Restrictions: DNN might be configured to restrict uploads of certain file types for security reasons. Make sure the file type you are trying to upload is allowed.
  • Folder Permissions: The folder you are trying to upload to might not have the correct permissions set, preventing files from being saved.
  • Disk Space: Your server may have run out of space. Check the available disk space and consider freeing up or allocating more space.
  • Web Server Configuration: The web server hosting your DNN site may have settings that are restricting file uploads, such as request size limits.
  • DNN Configuration: DNN itself has settings for file upload limits and types, which you may need to adjust in the site settings.
  • Browser or Network Issues: Sometimes the issue might be with the browser or network you are using. Try a different browser or check your network connection.
 

In DotNetNuke (DNN), a skin is essentially a theme or template that dictates the appearance and layout of a website. It defines how the website's content and modules are displayed, providing a consistent look and feel across all pages.

Skins can be customized to include specific colors, fonts, images, and other design elements that align with a brand or desired aesthetic. Additionally, skins often come with containers, which are sub-templates that control the appearance of individual modules within the pages. DNN allows users to choose from pre-designed skins or create custom ones using HTML, CSS, and JavaScript.

Custom skins can be uploaded and applied to the site, giving web developers the flexibility to craft unique designs. Skins are vital in ensuring that a DNN website is visually engaging, user-friendly, and aligned with the intended branding or style.

 

Yes, DNN (DotNetNuke) and SQL Server can work together, and in fact, this combination is very common. DNN is built on the Microsoft ASP.NET framework, and SQL Server is a popular choice for the database backend in ASP.NET applications.

DNN uses a database to store content, configuration, user data, and other information necessary for the website to function. SQL Server is often used as the database management system for DNN sites due to its performance, security features, and integration capabilities with the Microsoft technology stack. Further work must be done to ensure connection string function.

To set up DNN with SQL Server, you need to create a database in SQL Server and configure the DNN installation to connect to this database by providing the necessary connection strings and credentials. Once configured, DNN will automatically manage the interaction with the SQL Server database as you add content and configure your site.

 

Slow loading of a DNN (DotNetNuke) site can be attributed to various factors:

  • Large Files and Images: Oversized images and files can cause slower loading times. Optimize images and use file compression to reduce their sizes.
  • Unoptimized Code and Modules: Bulky code, unnecessary modules, or inefficient database queries can hinder performance. Review and optimize code, and uninstall unnecessary modules.
  • Hosting Environment: A slow or overcrowded hosting server can cause delays. Consider upgrading your hosting plan or moving to a more performant hosting provider.
  • Web Server Configuration: Improper configuration of the web server, like IIS, might be affecting performance. Fine-tune server configurations for better results.
  • Caching: Inadequate caching strategies can force the site to repeatedly fetch resources. Implement proper caching strategies to store and retrieve data more efficiently.
  • CDN Usage: Using a Content Delivery Network (CDN) can speed up content delivery by serving resources from servers closer to the user.
  • Database Optimization: Regularly maintain and optimize the database by cleaning up old data and optimizing queries.
  • Network Issues: Sometimes slow loading can be due to network congestion or issues. Check the network performance as well.
 

The “Parser Error Message” in DNN (DotNetNuke) typically indicates a problem in parsing the .NET code or loading components of the website. This error can be triggered by syntax mistakes in the code, missing or corrupted files, or incorrect assembly references.

To resolve this error, start by checking the detailed error message for specific information on the issue. Review your code for any syntax errors, ensure that all necessary files and assemblies are present, and verify the compatibility of the components. If you recently installed a module or updated the site, ensure it’s compatible with your DNN version.

 

In DNN (DotNetNuke), defining a default value typically refers to setting initial values for module settings, form fields, or site config. For custom module development, you can define default values within the code (C# or VB.NET). When creating forms using available form modules, you can generally specify default values through the form builder interface. For instance, when adding a text field, there might be an option to enter a default text value.

Additionally, within DNN's site settings, you can define defaults for various aspects of the site, like languages and permissions. The approach to setting default values in DNN depends on the context and the specific functionality you are working with.

 

Resolving the "Page Cannot Be Found" error in DNN requires checking several aspects. First, ensure that the URL is correct and that the page actually exists in DNN. Next, check if the page is published and not set as hidden in the page settings. Confirm that your DNN site is properly configured in IIS (Internet Information Services) and that the web server is running.

If these suggestions don't work, examine the permissions to make sure that the intended user roles have access to the page. If the issue is due to a broken link or redirect, correct the link or update the redirection path.

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Written by Stephen Beer
Stephen Beer is a Content Writer at Clarity Ventures and has written about various tech industries for nearly a decade. He is determined to demystify HIPAA, integration, enterpise SEO, and eCommerce with easy-to-read, easy-to-understand articles to help businesses make the best decisions.

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