How To Fix SCLNT_HTTP411 - Connection refused by server (ICM_HTTP_CONNECTION_REFUSED)

SCLNT_HTTP411 - Overview

• Message type: E = Error

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

• Message number: 411

• Message text: Connection refused by server (ICM_HTTP_CONNECTION_REFUSED)

What causes this issue?

The server has rejected the connection.

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?

Ensure that the server is reachable at the specified port number. A
possible cause for this is that the specified server was stopped
temporarily. In this case, try the connection again at a later point or
contact the server administrator.

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_HTTP411 - Connection refused by server (ICM_HTTP_CONNECTION_REFUSED) ?

  The SAP error message SCLNT_HTTP411 Connection refused by server (ICM_HTTP_CONNECTION_REFUSED) typically indicates that the Internet Communication Manager (ICM) in the SAP system is unable to establish a connection to the specified server. This can occur for several reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes
  
  
  Server Not Running: The target server or service you are trying to connect to may not be running or may have crashed.
  
  
  Network Issues: There could be network connectivity issues between the SAP system and the target server, such as firewall rules blocking the connection.
  
  
  Incorrect Configuration: The configuration settings in the SAP system (like the HTTP destination) may be incorrect, leading to connection attempts to the wrong server or port.
  
  
  Port Issues: The port specified in the connection settings may not be open or may be blocked by a firewall.
  
  
  Service Unavailable: The service you are trying to reach may be temporarily unavailable or