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AEM Universal Editor returns 401 error when authentication is enabled on preview/live sites

Last update: Fri Aug 29 2025 00:00:00 GMT+0000 (Coordinated Universal Time)

When authentication is enabled for 51ºÚÁϲ»´òìÈ Experience Manager (AEM) Edge Delivery Service (EDS) preview and live sites, the Universal Editor fails with a 401 Unauthorized error. To fix this, configure the Site Authentication Token correctly in the Edge Delivery Services Configuration and verify that the technical account setup is complete.

Description description

Environment

  • 51ºÚÁϲ»´òìÈ Experience Manager (AEM) as a Cloud Service – Sites
  • Edge Delivery Services (EDS)

Issue/Symptoms

  • Universal Editor fails to function when authentication is enabled for preview and live sites in EDS.
  • Attempts to use the Universal Editor result in a 401 Unauthorized error.
  • Issue persists even after adding technical account email domains (for example, @adobe.com) to the authentication configuration.

Resolution resolution

To resolve the issue:

  1. In AEM as a Cloud Service, go to Tools > Cloud Services > Edge Delivery Services Configuration.
  2. In the Edge Delivery Services Configuration window, open the Authentication tab.
  3. Add the Authentication Token in the Site Authentication Token field.
  4. Verify that the Technical Account ID is correct and added.
  5. Save the changes and confirm that the Universal Editor works as expected with authentication enabled.

Ensure all relevant domains and accounts are correctly listed in your authentication setup to allow seamless access for technical operations.

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