How To Fix SCLNT_HTTP416 - Logon at proxy failed (ICM_HTTP_PROXY_UNAUTHORIZED)

SCLNT_HTTP416 - Overview

• Message type: E = Error

• Message class: SCLNT_HTTP - Messages for HTTP Client for Respective Error Code

• Message number: 416

• Message text: Logon at proxy failed (ICM_HTTP_PROXY_UNAUTHORIZED)

What causes this issue?

The logon at the proxy server has failed.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the proxy logon data.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SCLNT_HTTP416 - Logon at proxy failed (ICM_HTTP_PROXY_UNAUTHORIZED) ?

  The SAP error message SCLNT_HTTP416 with the description "Logon at proxy failed (ICM_HTTP_PROXY_UNAUTHORIZED)" typically indicates that there is an issue with authentication when trying to connect to a proxy server. This error can occur in scenarios where SAP systems are configured to use a proxy for outbound HTTP(S) connections, and the credentials provided for the proxy are either missing, incorrect, or not accepted by the proxy server.
  Causes:
  
  Incorrect Proxy Credentials: The username or password configured for the proxy might be incorrect.
  Missing Proxy Credentials: The system may not have the necessary credentials configured to authenticate with the proxy.
  Proxy 
  Configuration Issues: The proxy server itself may have configuration issues or may be down.
  Network Issues: There could be network connectivity issues preventing the SAP system from reaching the proxy server.
  Authorization Issues: The user account being used may not have the necessary permissions to access the proxy.
  
  Solutions:
  
  
  Check Proxy Configuration:
  
  Go to the SAP system's transaction code