PowerProtect: Discovery Fails for DD System, Error ADS0005, Authentication Token Empty

Summary: This article provides guidance for resolving the ADS0005 error encountered during the discovery of a PowerProtect Data Domain (DD) system in PowerProtect Data Manager. A misconfigured login session limit on the DD system causes the error by preventing the generation of a valid authentication token. ...

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Symptoms

During the discovery of a PowerProtect DD system in PowerProtect Data Manager, the following error is displayed:

ADS0005
Unable to discover protection storage PowerProtect DD System with address <n.n.n.n> because of com.emc.brs.common.resource.ResourceException: 
Error while executing /rest/v1.0/systemcode: 5468 statusCode: 400 Error: **** Authentication token is empty..

Cause

The error occurs when the login-max-active option on the Data Domain system is set too low, preventing PowerProtect Data Manager from establishing a valid session and retrieving the required authentication token.

To verify the current setting, run:

# adminaccess option show login-max-active

Resolution

To address the issue:

  1. Log in to the Data Domain system using CLI.
  2. Increase the maximum number of active login sessions by running:
# adminaccess option set login-max-active 100
  1. Retry the discovery operation from the PowerProtect Data Manager user interface.

This change sets the login-max-active value to its default, allowing PowerProtect Data Manager to successfully authenticate and complete the discovery process.

Affected Products

PowerProtect Data Manager
Article Properties
Article Number: 000356281
Article Type: Solution
Last Modified: 21 Nov 2025
Version:  2
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