You have a .NET process that runs for less than 60 seconds and are not seeing data reported for that process.
The APM harvest cycle is 60 seconds. For this reason, processes that run for shorter periods of time may not report data. To fix this, use the
sendDataOnExitThreshold service elements in your newrelic.config. You must set the
sendDataOnExitThreshold value to a lower amount of time than the process takes to complete.