Hello everyone, Does anyone know how to fix this problem? Code: Aug 16 11:43:12 localhost nagios: EXTERNAL COMMAND: PROCESS_SERVICE_CHECK_RESULT;winserver;$SERVICEDEC$;0;c:\ - total: 39.06 Gb - used: 11.06 Gb (28%) - free 28.00 Gb (72%) Aug 16 11:43:12 localhost nagios: Warning: Passive check result was received for service '$SERVICEDEC$' on host 'winserver', but the service could not be found! On my later post, I have a problem regarding NSCA but I was able to fix that problem and now I am stuck with this new problem. Obviously, the log file is telling me that it was able to receive that passive check but it seems like the received service shouldn't be "$SERVICEDEC$". I was expecting it could be the actual service like uptime, current load, drive space, etc. But to my surprise, it wasn't and now the central server cannot find '$SERVICEDEC$' because in the first there is no service such as '$SERVICEDEC$'. Does anybody there who know how to fix this? Thanks in advance.