I also see unknown get failures periodically in a high-load production system. I’m using server 2.0.1 on CentOS, and using the 1.2.4 .NET SDK. I see this problem maybe once per week, so it is fairly rare. I’m using ExecuteGet, and the IGetOperationResult indicates Success==false, but no other information is provided. No message, status code, or exception, and no InnerResult either. My logs aren’t currently revealing whether this is a timeout or not, but I plan to instrument my API wrapper to provide timing metrics to make it easier to determine if these are indeed timeouts, or perhaps some other type of transient network failure, which is also possible.