How To Fix SWK074 - TCP/IP error while connecting to the launch handler

SAP Error Message - Details

• Message type: E = Error

• Message class: SWK - Messages for Workflow - Workplace Plug-In 4.0B

• Message number: 074

• Message text: TCP/IP error while connecting to the launch handler

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 SWK074 - TCP/IP error while connecting to the launch handler ?

  The SAP error message SWK074 indicates a TCP/IP error while trying to connect to the launch handler. This error typically occurs in the context of SAP Business Workflow or when using the SAP GUI to connect to a backend system. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the client and the SAP server. This could be due to firewalls, routing issues, or network outages.
  Incorrect Configuration: The SAP system or the client may not be configured correctly. This includes incorrect settings in the SAP GUI or the application server.
  Service Not Running: The launch handler service may not be running on the server, or it may have crashed.
  Port Issues: The port used for communication may be blocked or not open.
  DNS Resolution: There may be issues with DNS resolution if the hostname is not resolving correctly to the IP address of the SAP server.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or tracert to check if the SAP server is reachable from the client machine.
  Ensure that there are no firewalls blocking the required ports.
  
  
  
  Verify Configuration:
  
  Check the SAP GUI configuration settings to ensure that the correct application server and instance number are specified.
  Ensure that the launch handler is correctly configured in the SAP system.
  
  
  
  Restart Services:
  
  If you have access, check if the launch handler service is running on the server. Restart it if necessary.
  You may also want to restart the SAP application server.
  
  
  
  Check Port Availability:
  
  Ensure that the port used for the SAP connection (usually 3200 for the default instance) is open and not being blocked by a firewall.
  
  
  
  DNS Configuration:
  
  Verify that the hostname used in the SAP GUI is resolving correctly to the IP address of the SAP server. You can test this by using the nslookup command.
  
  
  
  Review Logs:
  
  Check the SAP system logs (transaction SM21) and the developer traces (transaction ST11) for any additional error messages that might provide more context.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the SWK074 error for any specific patches or updates that may address the issue.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  Documentation: Review the official SAP documentation for troubleshooting TCP/IP connections and network issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your network administrator or SAP Basis team for further investigation.