Exchange 2007 SP1 I seem to be getting this error quite a lot on my Client Access server. Done a vast array of searches but can't find anyone else with this error. Certainly is a vague one. Is there perhaps anything I do to increase logging for this error to find the route cause? Event Type: Error Event Source: MSExchange Common Event Category: General Event ID: 4999 Date: 26/11/2010 Time: 09:36:12 User: N/A Computer: CAS01 Description: Watson report about to be sent to dw20.exe for process id: 8088, with parameters: E12IIS, c-RTL-AMD64, 08.01.0240.006, OWA, mscorlib, S.I.Path.CheckInvalidPathChars, System.ArgumentException, 7ee, 02.00.50727.3615. ErrorReportingEnabled: False For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Hi Andrew, Since this Error is a very general error, I suggest you follow these steps to troubleshoot the problem: 1. If this is the only error in your event log, please increase Diagnostic logging to have a try( after you increase Diagnostic logging, if there is any other error, please paste in your next post). You can increase Diagnostic logging by this way: Set-EventLogLevel "MSExchange Common\General" -Level High 2. Please use Exchange Best Practices Analyzer to do a health test for your Exchange Server, and follow it suggestions to troubleshoot the problem. 3. As the latest update Exchange 2007 sp3 has been published, I suggest you install this update to have a try. Resource: How to Change Logging Levels for Exchange Processes http://technet.microsoft.com/en-us/library/bb201670(EXCHG.80).aspx Detail Event ID 4999 http://www.microsoft.com/technet/support/ee/transform.aspx?ProdName=Exchange&ProdVer=8.0&EvtID=4999&EvtSrc=MSExchange+Common&LCID=1033 Microsoft Exchange Server Best Practices Analyzer Quick Start Guide http://technet.microsoft.com/en-us/library/cc164306(EXCHG.65).aspx If the problem persists, please feel free to let me know. Thanks, EvanPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

In havinbg exact the same problem but sp3 an rollup3 v2 installed. Are there any suggestions? Der Watson-Bericht steht kurz vor dem Versenden an 'dw20.exe' für die Prozess-ID: 11412, mit den Parametern: E12, c-RTL-AMD64, 08.03.0159.002, M.E.C.ReplayService, unknown, unknown, M.E.Rpc.RpcException, 0, unknown. ErrorReportingEnabled: False Protokollname: Application Quelle: MSExchange Common Datum: 06.06.2011 15:36:09 Ereignis-ID: 4999 Aufgabenkategorie:Allgemein Ebene: Fehler Schlüsselwörter:Klassisch Benutzer: Nicht zutreffend Computer: Sxxx-S-SBS1.xxx.local Beschreibung: Der Watson-Bericht steht kurz vor dem Versenden an 'dw20.exe' für die Prozess-ID: 11412, mit den Parametern: E12, c-RTL-AMD64, 08.03.0159.002, M.E.C.ReplayService, unknown, unknown, M.E.Rpc.RpcException, 0, unknown. ErrorReportingEnabled: False Ereignis-XML: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="MSExchange Common" /> <EventID Qualifiers="16388">4999</EventID> <Level>2</Level> <Task>1</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2011-06-06T13:36:09.000Z" /> <EventRecordID>291546</EventRecordID> <Channel>Application</Channel> <Computer>xx-S-SBS1.xx.local</Computer> <Security /> </System> <EventData> <Data>11412</Data> <Data>E12</Data> <Data>c-RTL-AMD64</Data> <Data>08.03.0159.002</Data> <Data>M.E.C.ReplayService</Data> <Data>unknown</Data> <Data>unknown</Data> <Data>M.E.Rpc.RpcException</Data> <Data>0</Data> <Data>unknown</Data> <Data>False</Data> </EventData> </Event>