Troubleshooting
Problem
IIS Single-sign-on (SSO) fails with "AAA-AUT-0013 The user is already authenticated in all available namespaces."
Symptom
IIS Single-sign-on (SSO) fails with "AAA-AUT-0013 The user is already authenticated in all available namespaces." in any browser.
IIS configuration script bundled with CA was used to configure IIS.
Application is up and running and direct login via Dispatcher URI works, but when logging in via Gateway the error "AAA-AUT-0013 The user is already authenticated in all available namespaces." is displayed.
Document Location
Worldwide
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Document Information
Modified date:
14 January 2026
UID
ibm16256100