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Application failed with .NET runtime related issue when used in COM mode

16 Nov 2017 10:19 #5660 by m.baumgartner

Our application is a windows service that uses QuickOPC UA for COM to collect data from devices on the network. We've been conducting a stress test lately and have been observing the following issue :

The Windows service fails and shut down on it's own. A windows system log has been found indicating the following :

Erreur à 01:06:26 .NET RuntimeApplication : Cprod.exe
Version du Framework : v4.0.30319
Description : le processus a été arrêté en raison d'une exception non gérée.
Informations sur l'exception : code d'exception c0000005, adresse d'exception 07677324
Erreur 01:06:28 Application Error
Nom de l’application défaillante Cprod.exe, version :, horodatage : 0x5a04779e
Nom du module défaillant : ntdll.dll, version : 10.0.15063.608, horodatage : 0x802f667e
Code d’exception : 0xc0000005
Décalage d’erreur : 0x00085ab4
ID du processus défaillant : 0x2c14
Heure de début de l’application défaillante : 0x01d35deca19ac5d1
Chemin d’accès de l’application défaillante : C:\Program Files (x86)\Smcom Software\Cwork\bin\Cprod.exe
Chemin d’accès du module défaillant: C:\WINDOWS\SYSTEM32\ntdll.dll
ID de rapport : a0cd2565-f921-41bb-b2d6-115f2838fbec
Nom complet du package défaillant :
ID de l’application relative au package défaillant :

I'm sorry it's in french but it's quite understandable.
Apparently it's a .Net Runtime related error.

We're not using any other .Net related components in our application.

Our stress test protocol is the following :

- 14 boolean OPCDA tags changing value every 5 seconds. All together.
- Our app gets the events and act accordingly with our internal algorithm

It worked perfectly fine the time it lasted (around 6 to 7 hours) with CPU usage at decent levels.
It then crashed around 1:06 AM without any error that we were able to catch.

An idea?

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