The gateway occasionally will not stop when using net stop “Oracle Waveset Gateway“ (ID-2337).
Under some circumstances, the gateway does not stop cleanly when stopped from the Services Console on Windows (any supported Windows version). In response, Oracle Waveset displays a dialog box with a message that indicates that the gateway did not respond in a timely fashion. If you dismiss the dialog box, Oracle Waveset indicates that the gateway has stopped. If you use the command-line equivalent, net stop <service name>, Oracle Waveset indicates that an exception has occurred. Note that in both cases, the gateway has stopped. (ID-20296)
Workaround: Use the command line gateway -k to stop the gateway service.