DocumentationExperience Cloud KCS

AEM as a Cloud Service Author environment returns HTTP 503 and is inaccessible

Last update: October 5, 2026

In Adobe Experience Manager as a Cloud Service (AEMaaCS), the Author environment becomes inaccessible and returns an HTTP 503 Service Unavailable error. The issue is often preceded by severe slowness and can prevent access to the Author environment URL. To resolve the issue, restart the affected Author environment.

Description description

Environment

  • Adobe Experience Manager as a Cloud Service (AEMaaCS)
  • Author environment

Issue/Symptoms

  • The AEM as a Cloud Service Author environment becomes inaccessible.
  • Accessing the Author environment URL returns an HTTP 503 Service Unavailable error.
  • The issue is often preceded by severe slowness in the environment.
  • Accessing the Author environment URL consistently reproduces the HTTP 503 Service Unavailable error.

Resolution resolution

Follow the steps below to resolve the issue:

  1. Sign in to AEM Cloud Manager and review the status of the Author environment to confirm the outage and the presence of HTTP 503 Service Unavailableerrors.
  2. If you have the necessary permissions in Cloud Manager, restart the affected Author environment using the Cloud Manager interface.
  3. If you do not have permission to restart the environment, contact your organization’s Cloud Manager administrator or Adobe Support and request a restart.
  4. After the restart, monitor the Author environment and verify that it becomes accessible and the HTTP 503 Service Unavailable error no longer occurs.
  5. If the issue persists or recurs, collect relevant logs and contact Adobe Support for further investigation.
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