IIS - IIS 7 Faulting application name: w3wp.exe

Asked By Anup Kumar on 04-Oct-13 07:15 AM
Hi,

We had created a website using WCSF framework and .NET 2.0.

Currently this application is live and used by more than 1000 users. We have deployed this in a cloud in IIS 7 under Windows 2008 Server R2. We also use Sql Server 2008 R2 database for the backend. The deployment architecture is as described below.

There are two web servers connected under a load balancer (Hardware based) using sticky sessions. These two servers communicates with two database servers with more than 600 databases scattered evenly between them. All requests will first go to a admin database which redirects to the appropriate db server.

Now to the issue....

We are getting around 4 to 5 w3wp crashes per day in both the servers. During this time all the users connected to the application will be logged out. 

Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7afa2
Faulting module name: KERNELBASE.dll, version: 6.1.7601.18229, time stamp: 0x51fb1677
Exception code: 0xe053534f
Fault offset: 0x000000000000940d
Faulting process id: 0x%9
Faulting application start time: 0x%10
Faulting application path: %11
Faulting module path: %12
Report Id: %13

Recently we opened a case with MS and their comments is given below.

The process crashed due to Stack Overflow issue. 

.Net Call Stack

System.Enum.System.IConvertible.ToInt64(System.IFormatProvider)

System.Convert.ToInt64(System.Object, System.IFormatProvider)

System.Enum.ToUInt64(System.Object)

System.Enum.IsDefined(System.Type, System.Object)

Microsoft.Practices.ObjectBuilder.Locator.Get(System.Object, Microsoft.Practices.ObjectBuilder.SearchMode)

Microsoft.Practices.ObjectBuilder.ReadableLocator.Get[[System.__Canon, mscorlib]](System.Object)

<Trimmed>

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

 

Full Call Stack

 

We are seeing that the call is made for the URL :- ASP.xxxdashboards_recordlistview_aspx

 

ntdll!ZwTerminateProcess

KERNELBASE!TerminateProcess+2f

mscorwks!EEPolicy::HandleFatalStackOverflow+13b

mscorwks!EEPolicy::HandleStackOverflow+212

mscorwks!CLRVectoredExceptionHandler+3de1be

mscorwks!CLRVectoredExceptionHandlerShim+42

ntdll!RtlpCallVectoredHandlers+a8

ntdll!RtlDispatchException+22

ntdll!KiUserExceptionDispatch+2e

KERNELBASE!RaiseException+39

mscorwks!AllocateObject+34aeb1

mscorwks!MethodTable::FastBox+43

mscorwks!MethodTable::Box+5b

mscorwks!ReflectionEnum::InternalGetEnumValue+139

System.Enum.System.IConvertible.ToInt64(System.IFormatProvider)+b

System.Convert.ToInt64(System.Object, System.IFormatProvider)+35

System.Enum.ToUInt64(System.Object)+9d

System.Enum.IsDefined(System.Type, System.Object)+ff

Microsoft.Practices.ObjectBuilder.Locator.Get(System.Object, Microsoft.Practices.ObjectBuilder.SearchMode)+4d

Microsoft.Practices.ObjectBuilder.ReadableLocator.Get[[System.__Canon, mscorlib]](System.Object)+10

Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+11f

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+2be

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+2be

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+2be

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+2be

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+2be

 

<Trimmed>

 

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+28e

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+28e

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+56

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)+28e

Microsoft.Practices.CompositeWeb.ObjectBuilder.WCSFBuilderBase`1[[Microsoft.Practices.CompositeWeb.ObjectBuilder.WCSFBuilderStage, Microsoft.Practices.CompositeWeb]].DoBuildUp(Microsoft.Practices.ObjectBuilder.IReadWriteLocator, System.Type, System.String, System.Object, Microsoft.Practices.ObjectBuilder.PolicyList[])+13a

Microsoft.Practices.CompositeWeb.ObjectBuilder.WCSFBuilderBase`1[[Microsoft.Practices.CompositeWeb.ObjectBuilder.WCSFBuilderStage, Microsoft.Practices.CompositeWeb]].BuildUp(Microsoft.Practices.ObjectBuilder.IReadWriteLocator, System.Type, System.String, System.Object, Microsoft.Practices.ObjectBuilder.PolicyList[])+64

Microsoft.Practices.CompositeWeb.CompositionContainer.BuildItem(Microsoft.Practices.ObjectBuilder.IBuilder`1<Microsoft.Practices.CompositeWeb.ObjectBuilder.WCSFBuilderStage>, Microsoft.Practices.ObjectBuilder.IReadWriteLocator, System.Object)+334

Microsoft.Practices.CompositeWeb.WebClientApplication.BuildItemWithCurrentContext(System.Object)+121

Microsoft.Practices.CompositeWeb.Web.UI.UserControl.OnInit(System.EventArgs)+3f

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+8f

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Control.AddedControl(System.Web.UI.Control, Int32)+10f

DevExpress.Web.ASPxTabControl.Internal.PCContentsControl.CreateControlHierarchy()+2ae

DevExpress.Web.ASPxClasses.ASPxWebControlBase.CreateChildControls()+33

 

<Trimmed>

System.Web.UI.Control.EnsureChildControls()+92

DevExpress.Web.ASPxClasses.ASPxWebControlBase.EnsureChildControls()+9

DevExpress.Web.ASPxClasses.ASPxWebControlBase.DevExpress.Web.ASPxClasses.Internal.IASPxWebControl.EnsureChildControls()+d

DevExpress.Web.ASPxClasses.Internal.RenderUtils.EnsureChildControlsRecursive(System.Web.UI.Control, Boolean)+3e

DevExpress.Web.ASPxClasses.Internal.RenderUtils.EnsureChildControlsRecursive(System.Web.UI.Control, Boolean)+d0

DevExpress.Web.ASPxClasses.ASPxWebControlBase.EnsureChildControlsRecursive(System.Web.UI.Control)+25

DevExpress.Web.ASPxClasses.ASPxWebControl.CreateChildControls()+166

System.Web.UI.Control.EnsureChildControls()+92

DevExpress.Web.ASPxClasses.ASPxWebControlBase.EnsureChildControls()+9

DevExpress.Web.ASPxClasses.ASPxWebControlBase.DevExpress.Web.ASPxClasses.Internal.IASPxWebControl.EnsureChildControls()+d

DevExpress.Web.ASPxClasses.Internal.RenderUtils.EnsureChildControlsRecursive(System.Web.UI.Control, Boolean)+3e

DevExpress.Web.ASPxClasses.Internal.RenderUtils.EnsureChildControlsRecursive(System.Web.UI.Control, Boolean)+d0

DevExpress.Web.ASPxClasses.ASPxWebControlBase.EnsureChildControlsRecursive(System.Web.UI.Control)+25

DevExpress.Web.ASPxClasses.ASPxWebControl.CreateChildControls()+166

System.Web.UI.Control.EnsureChildControls()+92

DevExpress.Web.ASPxClasses.ASPxWebControlBase.EnsureChildControls()+9

DevExpress.Web.ASPxClasses.ASPxWebControl.InitInternal()+48

DevExpress.Web.ASPxClasses.ASPxDataWebControlBase.OnInit(System.EventArgs)+1c

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+8f

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Control.InitRecursive(System.Web.UI.Control)+187

System.Web.UI.Page.ProcessRequestMain(Boolean, Boolean)+5c5

System.Web.UI.Page.ProcessRequest(Boolean, Boolean)+a0

System.Web.UI.Page.ProcessRequest()+5b

System.Web.UI.Page.ProcessRequest(System.Web.HttpContext)+f0

ASP.xxxdashboards_recordlistview_aspx.ProcessRequest(System.Web.HttpContext)+9

 

We are seeing the following code in a tight recursive loop which is eventually leading into StackOverflow situation.

 

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.ObjectBuilder.BuilderStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

Microsoft.Practices.CompositeWeb.BuilderStrategies.ContainerAwareTypeMappingStrategy.BuildUp(Microsoft.Practices.ObjectBuilder.IBuilderContext, System.Type, System.Object, System.String)

 

Further, they also added the following.

 

Looked into the code to see the infinite loop and here seems to be the case

 Inside Microsoft_Practices_CompositeWeb!Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy

 

public override http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Object http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.CompositeWeb:2.0.2.0:31bf3856ad364e35/Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy/BuildUp%28Microsoft.Practices.ObjectBuilder.IBuilderContext,System.Type,Object,String%29:Object(http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.IBuilderContext context, http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Type typeToBuild, http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Object existing, http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.String idToBuild)

{

  http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.CompositeWeb:2.0.2.0:31bf3856ad364e35/Microsoft.Practices.CompositeWeb.Interfaces.ISessionStateLocatorService service = context.http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.IBuilderContext/property:Locator:Microsoft.Practices.ObjectBuilder.IReadWriteLocator.(object);" href="http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.IReadableLocator/Get%3c%3e%28Object%29:"Get<http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.CompositeWeb:2.0.2.0:31bf3856ad364e35/Microsoft.Practices.CompositeWeb.Interfaces.ISessionStateLocatorService>(new http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.DependencyResolutionLocatorKey/.ctor%28System.Type,String%29(typeof(http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.CompositeWeb:2.0.2.0:31bf3856ad364e35/Microsoft.Practices.CompositeWeb.Interfaces.ISessionStateLocatorService), null));

    if (service != null)

    {

    http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://System.Web:2.0.0.0:b03f5f7f11d50a3a/System.Web.SessionState.IHttpSessionState sessionState = service.http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.CompositeWeb:2.0.2.0:31bf3856ad364e35/Microsoft.Practices.CompositeWeb.Interfaces.ISessionStateLocatorService/GetSessionState%28%29:System.Web.SessionState.IHttpSessionState();

      foreach (http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Reflection.FieldInfo info in typeToBuild.http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Type/GetFields%28%29:System.Reflection.FieldInfo%5b%5d())

      {

        this.http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.CompositeWeb:2.0.2.0:31bf3856ad364e35/Microsoft.Practices.CompositeWeb.BuilderStrategies.SessionStateBindingStrategy/SetFieldValue%28Object,System.Reflection.FieldInfo,System.Web.SessionState.IHttpSessionState%29(existing, info, sessionState);

      }

    }

    return base.http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.BuilderStrategy/BuildUp%28Microsoft.Practices.ObjectBuilder.IBuilderContext,System.Type,Object,String%29:Object(context, typeToBuild, existing, idToBuild);

}

 

 

So this calls the BuildUp defined in Microsoft_Practices_ObjectBuilder!Microsoft.Practices.ObjectBuilder.BuilderStrategy

 

 

public virtual http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Object http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.BuilderStrategy/BuildUp%28Microsoft.Practices.ObjectBuilder.IBuilderContext,System.Type,Object,String%29:Object(http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.IBuilderContext context, http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Type typeToBuild, http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.Object existing, http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://mscorlib:2.0.0.0:b77a5c561934e089/System.StringidToBuild)

{

  http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.IBuilderStrategy nextInChain = context.http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.IBuilderContext/GetNextInChain%28Microsoft.Practices.ObjectBuilder.IBuilderStrategy%29:Microsoft.Practices.ObjectBuilder.IBuilderStrategy(this);

    if (nextInChain != null)

    {

      return nextInChain.http://www.aisto.com/roeder/dotnet/Default.aspx?Target=code://Microsoft.Practices.ObjectBuilder:1.0.51206.0:b03f5f7f11d50a3a/Microsoft.Practices.ObjectBuilder.IBuilderStrategy/BuildUp%28Microsoft.Practices.ObjectBuilder.IBuilderContext,System.Type,Object,String%29:Object(context, typeToBuild, existing, idToBuild);

    }

    return existing;

}

  

This results in infinite loop.


We are not sure where to look for the issue at the moment and if anybody could help us to solve the issue it would be very much appreciated.

Thanks,
Anup
Robbe Morris replied to Anup Kumar on 04-Oct-13 08:10 AM
Can you post your real code?  I would think this would crash in debug mode too.  Are you able to point your visual studio environment to production and duplicate the exact same data environment (same user and same data being used)?

You may have an oddity in your data in production that your code doesn't account for.
Anup Kumar replied to Robbe Morris on 04-Oct-13 08:33 AM
Hi,

Thanks for the reply.

We are not able to recreate this issue from our end and it is working fine in the testing server.
Also we are not sure when this error is occurring or any scenario when this is occuring. So we are finding it difficult to debug and look at the exact place of concern. It is consistent though, that this is crashing IIS multiple times and all the logged in users are kicked out.

i am seeing what code should I be sending you. Let me check on that.

Thanks,
Anup