This article applies to:

• R3000 Enterprise Filter / AD Agent 1.0.3

Symptoms:

The AD Agent sends alert emails with the following type of exception caught:

System.OverflowException: Value was either too large or too small for a UInt16.

   at System.Threading.ReaderWriterLock.AcquireReaderLockInternal(Int32millisecondsTimeout)

   at System.Threading.ReaderWriterLock.AcquireReaderLock(Int32millisecondsTimeout)

   at LibDcAgent.DomainList.NormalizeDomainName(String name)

   at NetScan.WorkstationProbe.pulseDrainResultQueue(Object appRef,Int32 delta)

   at LibDcAgent.Pulse.Drive()

   at NetScan.NetScan_main.Main_imp()

   at NetScan.NetScan_main.Main(String[] args)

Causes:

• The Agent is trying to parse an event that is too long for the buffer it uses for parsing

Resolution:

This error is not anything to be concerned about - it is simply the Agent saying that a line in your AD security logs (or probe results) was too long for it to parse.  Since the Agent will only respond to logon/logoff events, which are not too long to parse, it would not have done anything with these lines even if it could parse them.