Automation Platform: SAAS Orchestrator Logs HTTP 400 Bad Header Request-Cookie Too Large

Summary: A user may encounter an HTTP 400 Bad Header Request Header or Cookie Too Large alert when connecting to a SAAS Dell Automation Platform orchestrator.

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Symptoms

A user may encounter an HTTP 400 Bad Header Request Header or Cookie Too Large alert when connecting to an Dell Automation Platform SAAS orchestrator.

Cause

Multiple logins over a period of time may cause the orchestrator cookie size to be too large, and the result is the bad header request alert.

Resolution

Workaround:

  • To clear the cookie using Developer Tools, in Microsoft Edge, press F12 to open Developer Tools
  • Select the Application menu item
  • Under Storage expand the Cookie selection 
  • Now Delete the relevant Cookie for https://automation.dell.com
  • Restart your web browser to ensure a fresh cookie creation

This issue is resolved in a future release of Dell Automation Platform SAAS.

This issue does not affect Dell Automation Platform On Prem.

Affected Products

Dell Automation Platform
Article Properties
Article Number: 000361617
Article Type: Solution
Last Modified: 03 Dec 2025
Version:  2
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