Hello, By error, i deleted some client computers from the SOCM 2012 (administration, managed by agent), and when i tried to reinstall the agents, it gives me the following error: Date : 24/09/2012 11:53:16 Application : Operations Manager Version de l'application : 7.0.8560.12 Gravit : Avertissement Message : Microsoft.EnterpriseManagement.Common.ServerDisconnectedException: Le client a t dconnect du serveur. Appelez ManagementGroup.Reconnect() pour rtablir la connexion. ---> System.ServiceModel.CommunicationObjectFaultedException: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state. Server stack trace: at System.ServiceModel.Channels.CommunicationObject.ThrowIfFaulted() 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 Microsoft.EnterpriseManagement.Common.Internal.IDispatcherService.DispatchUnknownMessage(Message message) at Microsoft.EnterpriseManagement.Common.Internal.AdministrationServiceProxy.InsertAgentPendingActions(IList`1 agentPrincipalNames, IList`1 pendingActionDataXml, String managementServerPrincipalName, Int32 pendingActionType) --- End of inner exception stack trace --- at Microsoft.EnterpriseManagement.Common.Internal.ExceptionHandlers.HandleChannelExceptions(Exception ex) at Microsoft.EnterpriseManagement.Common.Internal.AdministrationServiceProxy.InsertAgentPendingActions(IList`1 agentPrincipalNames, IList`1 pendingActionDataXml, String managementServerPrincipalName, Int32 pendingActionType) at Microsoft.EnterpriseManagement.Administration.ManagementServer.SubmitInstallAgents(IList`1 instances, IList`1 failoverServers, InstallAgentConfiguration installAgentConfiguration, TaskStatusChangeCallback callback) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Administration.AgentTaskStatus.<>c__DisplayClass8.<SubmitTask>b__0(Object , ConsoleJobEventArgs ) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Console.ConsoleJobExceptionHandler.ExecuteJob(IComponent component, EventHandler`1 job, Object sender, ConsoleJobEventArgs args) System.ServiceModel.CommunicationObjectFaultedException: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state. Server stack trace: at System.ServiceModel.Channels.CommunicationObject.ThrowIfFaulted() 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 Microsoft.EnterpriseManagement.Common.Internal.IDispatcherService.DispatchUnknownMessage(Message message) at Microsoft.EnterpriseManagement.Common.Internal.AdministrationServiceProxy.InsertAgentPendingActions(IList`1 agentPrincipalNames, IList`1 pendingActionDataXml, String managementServerPrincipalName, Int32 pendingActionType) thanks for your help Lotfi BOUCHERIT

Please check this article http://support.microsoft.com/kb/2262476. Although, it is relate to scom 2007 R2, the solution is related to computer that is running Microsoft Windows Server 2003. Hope this will help you Roger

Please check this article http://support.microsoft.com/kb/2262476. Although, it is relate to scom 2007 R2, the solution is related to computer that is running Microsoft Windows Server 2003. Hope this will help you Roger

Hi, Please refer to the following post and see if it helps: Error: The client has been disconnected from the server. Please call ManagementGroup.Reconnect() to reestablish the connection. http://thoughtsonopsmgr.blogspot.com/2009/11/error-client-has-been-disconnected-from.html Thanks. Nicholas Li TechNet Community Support

Hi, Please refer to the following post and see if it helps: Error: The client has been disconnected from the server. Please call ManagementGroup.Reconnect() to reestablish the connection. http://thoughtsonopsmgr.blogspot.com/2009/11/error-client-has-been-disconnected-from.html Thanks. Nicholas Li TechNet Community Support