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Resolving Active Directory Integration Issues in DNN

Overview

When integrating Active Directory (AD) with a DNN site, you may encounter authentication errors such as NullReferenceException or incorrect username/password messages. These issues can arise due to incorrect configuration settings, especially after a system upgrade. This article provides steps to correctly configure the AD connection settings to resolve such issues.

Information

To resolve Active Directory (AD) integration issues with your DNN site, follow these steps:

  1. Verify Internet Explorer Options:
    • Ensure that the Binding is added to the Trusted and Intranet sites in IE options.
  2. Check IIS Settings:
    • Confirm the application pool identity settings in IIS are correct.
  3. Configure web.config for Impersonation: 
    <identity impersonate="true"/>
<authentication mode="Windows">
</authentication>
  4. Set the Root Domain: 
    • Access the AD module settings and set the Root Domain field to LDAP://squ.edu.om.
  5. Confirm Credentials: 
    • Enter the correct username and password, and confirm the password.
  6. Update Authentication Settings: 
    • Click the "Update Authentication Setting" button to apply the changes.

If the issue persists, check the DNN logs and Event Viewer for additional error messages and ensure all settings are compatible with your DNN version.

Frequently Asked Questions

What should I do if I encounter a NullReferenceException during AD integration?
This error often indicates a missing configuration. Ensure that all necessary settings in the AD module are correctly configured, especially the Root Domain, username, and password.
How can I verify if my IIS settings are correct for AD integration?
Check the application pool identity settings in IIS and ensure they align with the requirements for AD authentication. Also, verify that the web.config file is configured for impersonation.
What is the correct format for the Root Domain in AD settings?
The Root Domain should be set in the format LDAP://yourdomain.com, replacing yourdomain.com with your actual domain name.
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  1. Priyanka Bhotika

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