3788093 - Joule displays blank popup with error"400 Bad Request: Request Header or Cookie Too Large"

When launching SAP Joule, users experience one or more of the following symptoms:

• A blank popup window appears and Joule cannot be loaded.
• In Browser, Navigate to Developer Tools (Network Trace) show a failed web client configuration request with HTTP 400 (Bad Request).
• In the browser's Developer Tools (Fn > F12) > Network, the following error can be seen:
  • Status Code: 431 Request Header Fields Too Large
• In the browser's Developer Tools (Fn > F12) > Console, the following error can be seen:
  • Failed to load resource: the server responded with a status of 431 ()

• Joule
• SAP BTP, Cloud Foundry runtime and environment

blank popup, blank screen, ias login screen blank, 400 bad request, request header too large, cookie too large, conditional authentication, trusted domain, ias groups, group assignments, webclient configuration 400, saml trace, network trace, browser cookies, authentication mismatch, Joule, displays, blank, popup, error, 400 Bad Request, Request Header or Cookie Too Large, request header, cookie, too large, 431, launching, SAP Joule, users, experience, blank popup, window, appears, loaded, Identity Authentication Service, IAS, login page, dislayed, blank screen,
Browser Developer Tools, Network Trace, failed,  web client, configuration, request, HTTP 400, Bad Request, 431 Request Header Fields Too Large, Failed to load resource: the server responded with a status of 431 (), number of roles, assigned, user, reduced, administrator user, login, IAS administration console, affected user, IAS, review, user group, assignments, remove, unnecessary, number of assigned groups, Save, Perform, Resynch, IPS Job, wait, successful, execution, Clear, browser cache, cookies, affected, SAP applications, Launch, new session, LOB solution, access, LOB Solution. , KBA , CA-JOULE , Joule , CA-JOULE-CONSULT , Consulting for Joule license, onboarding & general support. , Problem