The server logs do not show anything with debug mode turned on. We also timed the failure, and it seems to be happening around 1100 ms, which would suggest maybe that the attempt is timing out in the WaitOne() method?

Turning on an internal network listener, there is a dns request that happens for the domain and the app gets the successful response for that but then there doesn't appear to be any request to that actual ip address.

We also tried this on a Windows 8.1 Surface with the same result.

Any other ideas/suggestions?

Thanks!