Hi.
The issue you are facing might be due to network connectivity issues between the client and the server. The server might be experiencing high CPU usage or thread pool starvation, which can cause the server to drop the connection. You can check the thread count to see if there are any spikes at that time. If there are no spikes, you can use code to detect thread pool starvation. You can also dump the memory and analyze the call stack to find the root cause of thread pool starvation.
Another possibility is that the OpenTimeout value might be too small. You can check if the OpenTimeout value is less than about 20 seconds. If it is, you can increase the OpenTimeout value to resolve the issue.
It is also possible that the client certificate could not be found or validated. You can check if the Communication Services token is valid and not expired.
Hope the information is helpful.
Best Regards,
Hania Lian
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