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Support Article

Logout error with SAML authentication



An error is encountered during logout with SAML authentication. The user does not appear to be fully logged out of the system.

Error Messages

Error on screen:
"Unable to process the SAML WebSSO request : Unable to build SAML2 Authentication request :$TrustedCertificateEntry incompatible with$PrivateKeyEntry"

Error in logs:
2017-03-09 09:29:37,029 [ WebContainer : 6] [ STANDARD] [ ] [ Your_App:01.01.01] (nActivity.Code_Security.Action) ERROR your_server| - Error while executing the Authentication Service activity : Unable to build SAML2 Authentication request :$TrustedCertificateEntry incompatible with$PrivateKeyEntry

Steps to Reproduce

  1. Login to Pega using SAML SSO
  2. Once successfully logged in, click the link to log off

Root Cause

An issue in the custom application code or rules: The logoff process had been customized because the SAML IDP does not perform logoff based on this Support Article: Because of this customization, the standard "Logoff" activity was being used. However, the standard Logoff activity does a meta refresh right back to the Pega engine, and this was leading to a failed SAML authentication attempt after logoff.


Perform the following local-change: Customize the Web-Session-Return HTML rule to perform a meta refresh to a custom URL, and not back to Pega. Be sure to save the rule to a ruleset that is accessible to unauthenticated users.
Suggest Edit

Published March 26, 2017 - Updated October 8, 2020

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