How To Fix PO769 - Error in SNC library: No secure connection possible

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 769

• Message text: Error in SNC library: No secure connection possible

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO769 - Error in SNC library: No secure connection possible ?

  The SAP error message "PO769 Error in SNC library: No secure connection possible" typically indicates an issue with the Secure Network Communications (SNC) configuration in your SAP system. This error can arise due to various reasons, including misconfiguration, missing libraries, or issues with the underlying security infrastructure.
  Causes:
  
  SNC Configuration Issues: The SNC settings in the SAP system may not be correctly configured. This includes parameters in the instance profile or the SAP GUI.
  Missing or Incorrect SNC Library: The required SNC library (e.g., gssapi or snc.dll) may not be installed, or the path to the library may not be correctly set.
  Certificate Issues: If you are using SNC with Secure Sockets Layer (SSL), there may be issues with the certificates being used, such as expired or untrusted certificates.
  Network Issues: There may be network-related issues preventing a secure connection from being established.
  User Authorization: The user may not have the necessary authorizations to establish a secure connection.
  
  Solutions:
  
  
  Check SNC Configuration:
  
  Verify the SNC parameters in the instance profile (e.g., snc/enable, snc/gssapi_lib, snc/identity/as).
  Ensure that the SNC name is correctly configured for the user and the system.
  
  
  
  Install or Update SNC Library:
  
  Ensure that the required SNC library is installed on the server and that the path is correctly specified in the SAP profile.
  If using a third-party SNC library, ensure it is compatible with your SAP version.
  
  
  
  Review Certificates:
  
  Check the validity of the SSL certificates being used. Ensure they are not expired and are trusted by the SAP system.
  If necessary, update or replace the certificates.
  
  
  
  Network Configuration:
  
  Ensure that there are no firewall or network issues preventing the secure connection.
  Test connectivity to the SNC server to ensure it is reachable.
  
  
  
  User Authorizations:
  
  Verify that the user has the necessary authorizations to use SNC. Check the user roles and profiles.
  
  
  
  SAP Notes and Documentation:
  
  Check for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  Review the official SAP documentation for SNC configuration to ensure all steps have been followed correctly.
  
  
  
  Related Information:
  
  SNC Overview: Secure Network Communications (SNC) is a security layer that provides secure communication between SAP systems and clients.
  SAP Security: Understanding the broader context of SAP security, including user authentication and authorization, can help in troubleshooting.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.