How To Fix CLB2665 - Authentication failed and returned HTTP status code &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CLB2 - SAIL: Common messages

• Message number: 665

• Message text: Authentication failed and returned HTTP status code &1

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CLB2665 - Authentication failed and returned HTTP status code &1 ?

  The SAP error message CLB2665, which indicates "Authentication failed and returned HTTP status code &1," typically occurs when there is an issue with the authentication process when trying to access a service or resource via HTTP. This error can arise in various contexts, such as when using SAP Cloud Platform, SAP Gateway, or other web services.
  Causes:
  
  Invalid Credentials: The most common cause is that the username or password provided for authentication is incorrect.
  Expired Credentials: The credentials may have expired or been revoked.
  Service Configuration Issues: The service you are trying to access may not be configured correctly to accept the authentication method you are using.
  Network Issues: There may be network-related issues preventing proper communication with the authentication server.
  Authorization Issues: The user may not have the necessary permissions to access the requested resource.
  Incorrect URL: The URL being accessed may be incorrect or not pointing to the intended service.
  
  Solutions:
  
  Verify Credentials: Double-check the username and password being used for authentication. Ensure they are correct and have not changed.
  Check User Status: Ensure that the user account is active and not locked or disabled.
  Review Service Configuration: Check the configuration of the service you are trying to access. Ensure that it is set up to accept the authentication method you are using (e.g., Basic Auth, OAuth, etc.).
  Inspect Network Connectivity: Ensure that there are no network issues preventing access to the authentication server. You can use tools like ping or traceroute to diagnose connectivity issues.
  Check Authorization Roles: Ensure that the user has the necessary roles and permissions to access the resource.
  Correct URL: Verify that the URL you are trying to access is correct and points to the right endpoint.
  Review Logs: Check the application and system logs for more detailed error messages that can provide additional context about the failure.
  
  Related Information:
  
  HTTP Status Codes: The error message may include an HTTP status code (e.g., 401 Unauthorized, 403 Forbidden) that can provide more insight into the nature of the authentication failure.
  SAP Notes: Check SAP Notes and Knowledge Base Articles for any known issues or patches related to this error.
  Documentation: Review the relevant SAP documentation for the specific service or API you are trying to access for any specific authentication requirements or troubleshooting steps.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.