How To Fix SAML2081 - Authentication failed: User is already logged on

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 081

• Message text: Authentication failed: User is already logged on

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2081 - Authentication failed: User is already logged on ?

  The SAP error message SAML2081: Authentication failed: User is already logged on typically occurs in scenarios involving Single Sign-On (SSO) configurations, particularly when using SAML (Security Assertion Markup Language) for authentication. This error indicates that the user is attempting to log in while they already have an active session.
  Causes:
  
  Multiple Sessions: The user is trying to log in from multiple devices or browsers simultaneously.
  Session Timeout: The session may not have been properly terminated, leading to the system believing the user is still logged in.
  Configuration Issues: There may be issues with the SSO configuration, such as incorrect settings in the Identity Provider (IdP) or Service Provider (SP).
  Browser Cache/Cookies: Old session data stored in the browser cache or cookies may interfere with the login process.
  User Lockout: The user account may be locked or restricted due to security policies.
  
  Solutions:
  
  Log Out from Other Sessions: Ensure that the user logs out from all other sessions. This can often be done by accessing the application from another device or browser and logging out.
  Clear Browser Cache/Cookies: Clear the browser cache and cookies to remove any old session data that might be causing conflicts.
  Check Session Management Settings: Review the session management settings in the SSO configuration to ensure they are set up correctly. This includes checking timeout settings and session limits.
  Identity Provider Configuration: Verify the configuration of the Identity Provider (IdP) to ensure it is correctly set up to handle multiple sessions and that it is properly integrated with the Service Provider (SP).
  User Account Status: Check the status of the user account in the SAP system to ensure it is not locked or restricted.
  Consult Logs: Review the logs on both the IdP and SP sides for any additional error messages or warnings that could provide more context about the failure.
  
  Related Information:
  
  SAML Configuration: Understanding how SAML works and the roles of IdP and SP can help in troubleshooting.
  SAP Notes: Check SAP Notes and Knowledge Base Articles for any known issues or patches related to SAML authentication.
  User Documentation: Refer to user documentation for the specific SAP application being accessed, as there may be additional troubleshooting steps or configuration settings specific to that application.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with your SAP Basis team or SAP support for further assistance.