OWA inconsistently fails

[jackam]

#132019

Hi there
For months now I have been running OWA no problem on a server, but recently it started giving error message 1503. During my testing of the problem I can access OWA a few times (no more than 5) and then the next time it gives the error: A System error has occurred while processing your request. Please try again. If the problem persists, contact your administrator … with the event id logged in the app log.

If i restart IIS it works fine for a few logons and then crashes again. I have tried changing the virtual folder to exchange-oma as well but to no avail

please help
Event Type: Error
Event Source: MSExchangeOMA
Event Category: (1000)
Event ID: 1503
Date: 4/30/2008
Time: 6:57:30 AM
User: N/A
Computer: CTSERVER01
Description:
An unknown error occurred while processing the current request:
Message: Object reference not set to an instance of an object.
Source: System
Stack trace:
at System.Net.OSSOCK.recv(IntPtr socketHandle, IntPtr pinnedBuffer, Int32 len, SocketFlags socketFlags)
at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)

Message: Unable to read data from the transport connection.
Source: System
Stack trace:
at System.Net.ConnectStream.BeginRead(Byte[] buffer, Int32 offset, Int32 size, AsyncCallback callback, Object state)
at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Xml.XmlStreamReader.Read(Byte[] data, Int32 offset, Int32 length)
at System.Xml.XmlScanner.Read()
at System.Xml.XmlScanner.ScanContent()
at System.Xml.XmlTextReader.ParseRoot()
at System.Xml.XmlTextReader.Read()
at Microsoft.Exchange.OMA.ExchangeDataProvider.StaticStuff.ParseDavResponse(Stream response, NewItemDelegate newItem, AddItemDelegate addItem, StatusDelegate handleStatus)
at Microsoft.Exchange.OMA.ExchangeDataProvider.ExchangeItem.PopulateProperties(IList RequestedProperties, Boolean NoPreferences)
at Microsoft.Exchange.OMA.ExchangeDataProvider.ExchangeRootFolder.PopulateProperties(IList RequestedProperties, Boolean NoPreferences)
at Microsoft.Exchange.OMA.Preferencing.OmaUserInfo.EnsureProperties(IItem item, PropertyEnum[] properties)
at Microsoft.Exchange.OMA.Preferencing.OmaUserInfo.get_UserCulture()
at Microsoft.Exchange.OMA.UserInterface.Page.Page_Load(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.MobileControls.MobilePage.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain()

Message: Exception of type System.Web.HttpUnhandledException was thrown.
Source: System.Web
Stack trace:
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain()
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

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