iis - w3wp randomly crashes with AccessViolationException and TargetInvocationException serving WCF call -


We are looking at random (like once in 1-5 days) IIS crash exception in EventLog.
Server - Windows Server 2012 R2

  • There is an access violation (more often):

Applications: w3wp.exe
Framework version: V4.0.30319
Description: The process was terminated due to an unused exception. Exception information: System.AccessViolationException / Stack:

There is no additional details for this.

  • The second is a goal greetings (less often):

Applications: w3wp.exe
Framework version: v4.0.30319
Description: The process ended due to an unmanaged exception.
Exception information: The system. Reflection.TargetInvocationException / Stack: On the system. RuntimeMethodHandle.InvokeMethod (System.Object, System.Object [], System. Signature, Boolean) on system. Reflection.RuntimeMethodInfo. UnsafeInvokeInternal (System.Object, System.Object [], System.Object [])
On the system. Delegate.DynamicInvokeImpl (System.Object []) ... (different stack trace forward) ...

We did some debugging with some variations of this target invocation expression and forcibly By throwing an exception at the place, we can repeat a stack mark, but it has an internal X Ception (here it is not) + which does not infect IIS and usually the error is wrapped in a fault updation in the client.

Do you think this corrupted process may be related to the change in the state's .NET 4.0 handling. ?


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