The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:10:00'. The read operation failed, see inner exception.

Server stack trace: at System.ServiceModel.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout) at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.SendPreamble(IConnection connection, ArraySegment1 preamble, TimeoutHelper& timeoutHelper) at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.DuplexConnectionPoolHelper.AcceptPooledConnection(IConnection connection, TimeoutHelper& timeoutHelper) at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout) at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout) at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout) at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.CallOnceManager.CallOnce(TimeSpan timeout, CallOnceManager cascade) at System.ServiceModel.Channels.ServiceChannel.EnsureOpened(TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at Tridion.ExternalContentLibrary.Service.Client.ISessionAwareEclService.Impersonate(String userName) at Tridion.ExternalContentLibrary.UI.DataExtenders.EclDataExtenderBase.GetEclServiceClient(PipelineContext pipelineContext) at Tridion.ExternalContentLibrary.UI.DataExtenders.EclGetListExtender.OnProcessRequest(String command, String id, PipelineContext pipelineContext) at Tridion.ExternalContentLibrary.UI.DataExtenders.GetListExtenderBase.ProcessRequest(XmlTextReader reader, PipelineContext context) at Tridion.Web.UI.Core.Extensibility.Pipeline.<>c__DisplayClass1.<ProcessRequest>b__0(DataExtender extender) at System.Collections.Generic.List1.ForEach(Action`1 action) at Tridion.Web.UI.Core.Extensibility.DataExtenderParameterInspector.BeforeCall(String operationName, Object[] inputs) at Tridion.Web.UI.Core.Extensibility.DataExtenderOperationInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

More over we already tried following  : In %Tridion_HOME%\config\Tridion.ContentManager.config

<system.transactions> </system.transactions>

In %windir%\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config and %windir%\Microsoft.NET\Framework\v4.0.30319\Config\machine.config

Should we reach out customer support? Suggestions are appreciated!

The socket connection was aborted. This could be caused by an error processing your message or a receive timeout being exceeded by the remote host, or an underlying network resource issue. Local socket timeout was '00:10:00'.
The read operation failed, see inner exception.

Server stack trace: 
    at System.ServiceModel.Channels.StreamConnection.Read(Byte[] buffer, Int32 offset, Int32 size, TimeSpan timeout) 
    at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.SendPreamble(IConnection connection, ArraySegment`1 preamble, TimeoutHelper& timeoutHelper) 
    at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.DuplexConnectionPoolHelper.AcceptPooledConnection(IConnection connection, TimeoutHelper& timeoutHelper) 
    at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout) 
    at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout) 
    at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) 
    at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout) 
    at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) 
    at System.ServiceModel.Channels.ServiceChannel.CallOnceManager.CallOnce(TimeSpan timeout, CallOnceManager cascade) 
    at System.ServiceModel.Channels.ServiceChannel.EnsureOpened(TimeSpan timeout) 
    at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) 
    at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) 
    at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) 

Exception rethrown at [0]: 
    at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) 
    at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) 
    at Tridion.ExternalContentLibrary.Service.Client.ISessionAwareEclService.Impersonate(String userName) 
    at Tridion.ExternalContentLibrary.UI.DataExtenders.EclDataExtenderBase.GetEclServiceClient(PipelineContext pipelineContext) 
    at Tridion.ExternalContentLibrary.UI.DataExtenders.EclGetListExtender.OnProcessRequest(String command, String id, PipelineContext pipelineContext) 
    at Tridion.ExternalContentLibrary.UI.DataExtenders.GetListExtenderBase.ProcessRequest(XmlTextReader reader, PipelineContext context) 
    at Tridion.Web.UI.Core.Extensibility.Pipeline.<>c__DisplayClass1.<ProcessRequest>b__0(DataExtender extender) 
    at System.Collections.Generic.List`1.ForEach(Action`1 action) 
    at Tridion.Web.UI.Core.Extensibility.DataExtenderParameterInspector.BeforeCall(String operationName, Object[] inputs) 
    at Tridion.Web.UI.Core.Extensibility.DataExtenderOperationInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) 
    at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) 
    at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

More over we already tried following:

<session transactionTimeout="3600" />

on %Tridion_HOME%\config\Tridion.ContentManager.config and

<system.transactions>
     <defaultSettings timeout="01:30:00"/>
     <machineSettings maxTimeout="01:30:00" />
</system.transactions>

In %windir%\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config and %windir%\Microsoft.NET\Framework\v4.0.30319\Config\machine.config

Should we reach out to customer support? Suggestions are appreciated!