The OOB Server on Windows is a service. To start/stop/restart etc go into your control panel and look for Services (it is under Administrative tools on some versions of Windows). Start the service manager, scroll down the list of service names until you find "Easysoft ODBC-ODBC Bridge Server". Highlight the OOB Server service then use the control buttons to start/stop/restart/pause etc (on newer versions of Windows you can right click on a service to find the actions).
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