Dynamic Server for Windows runs as a service under the informix user account.

The Dynamic Server Message Server service communicates with the database server through the named pipes interprocess communications mechanism to receive information and to write it to the Windows Application Event log, as well as to the log file %INFORMIXDIR%\%INFORMIXSERVER%.log.

The database server starts Message Server when an instance of the database server first needs to write a message to the event log. Message Server does not terminate automatically when an instance of the database server terminates.