We are getting an impediment error in report manager. We can run the report about 3 times before start getting the error "Error" in our browser. Do anyone have an idea of how to fix it/root cause of this issue. Thanks in advance Attached the screen shot error information. <META Name="StackTrace" CONTENT="System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full 127.0.0.1:80 at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket&amp; socket, IPAddress&amp; address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception&amp; exception) --- End of inner exception stack trace --- at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request) at Microsoft.ReportingServices.UI.Global.RSWebServiceWrapper.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at Microsoft.SqlServer.ReportingServices2010.ReportingService2010.ListItemTypes() at Microsoft.SqlServer.ReportingServices2010.RSConnection2010.&lt;ListItemTypes>b__10f() at Microsoft.SqlServer.ReportingServices2010.RSConnection2010.SoapMethodWrapper`1.ExecuteMethod(Boolean setConnectionProtocol) at Microsoft.SqlServer.ReportingServices2010.RSConnection2010.SoapMethodWrapper`1.ExecuteMethod() at Microsoft.SqlServer.ReportingServices2010.RSConnection2010.ListItemTypes() at Microsoft.ReportingServices.UI.Global.SecureAllAPI() at Microsoft.ReportingServices.UI.ReportingPage.EnsureHttpsLevel() at Microsoft.ReportingServices.UI.ReportingPage.ReportingPage_Init(Object sender, EventArgs args) at System.EventHandler.Invoke(Object sender, EventArgs e) at System.Web.UI.Control.OnInit(EventArgs e) at System.Web.UI.Page.OnInit(EventArgs e) at System.Web.UI.Control.InitRecursive(Control namingContainer) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)">

Hi msbimsbi, Based on the error message, the issue may occur if the operating system runs (OS) out of memory for TCP buffers or the OS runs out of available TCP "ephemeral" ports. To avoid the issue, please refer to the resolutions in the following blog and KB article: http://blogs.msdn.com/b/sql_protocols/archive/2009/03/09/understanding-the-error-an-operation-on-a-socket-could-not-be-performed-because-the-system-lacked-sufficient-buffer-space-or-because-a-queue-was-full.aspxhttp://support.microsoft.com/kb/196271 Hope this helps. Regards, Mike Yin