Frequently asked questions

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MSI Installer on Windows refuses to install MessageHandler

Execute the MSI installation from the command line. This way the installation process produces a logfile, which may (on may not) contain valuable information. 

msiexec /i "C:\MessageHandler.msi" /L*V "C:\MessageHandler_Installer.log"

To diagnose the problem, inspect the file c:\Program Files (x86)\Open eGov MessageHandler\log\message-handler.log , while the MSI Installer still displays this error dialog:

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Note, that MessageHandler refuses to install, if you specify directories in the installations wizard,

• which do not exist! 
  Inspect the installation logfile and search for error messages like 

  No Format
  MSI (c) (7C:54) [14:32:12:501]: Note: 1: 1314 2: /Program Files/Sedexclient/interface MSI (c) (7C:54) [14:32:15:251]: Product: Open eGov MessageHandler -- Error 1314. The specified path '/Program Files/Sedexclient/interface' is unavailable.

  
  

• to which the chosen Service User Account does not have sufficient access rights. In this case the MH service will refuse to start in the installation process and the installation fails.
  To diagnose this situation, inspect the file c:\Program Files (x86)\Open eGov MessageHandler\log\message-handler.log , while the MSI Installer still displays this error dialog:
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Alternatively: Execute the MSI installation from the command line. This way the installation process produces a logfile, which may (on may not) contain valuable information. 

msiexec /i "C:\MessageHandler.msi" /L*V "C:\MessageHandler_Installer.log"

MSI Installer fails to uninstall MessageHandler

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• /config/messageHandler/workingDir
• /config/messageHandler/statusDatabase

How to upgrade a MH installation on Linux

Since the installation of the Linux distribution is not carried out with a installer, an upgrade can be done fairly easy.

Suppose, you have installed MH under ${INSTALL_DIR}. To upgrade:

• Unpack the distro unter ${DISTRO_DIR}
• Stop the MH service.

• Remove the current version of MH with

  Code Block
  language bash theme Emacs
  rm ${INSTALL_DIR}/lib/*

  
  

• Install the new version with 

  Code Block
  language bash theme Emacs
  cp ${DISTRO_DIR}/lib/* ${INSTALL_DIR}/lib/*

  
  

• Start the MH service

MessageHandler logs an ERROR on startup

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Is MessageHandler affected by "Log4Shell" vulnerability?

Although MessageHandler uses the log4j software library, MessageHandler is not affected by the vulnerability. The reason is that MessageHandler uses an older version of log4j, which is not vulnerable.

Please note that the sedex client, with which MessageHandler work together, is also not vulnerable in versions > 5.0.