I had a working test install of SCOM 2012 and on June 14th the System Center Data Access service would not start. Since this was a test system I decided to remove the install and do a clean install. After cleaning up all of the install (registry entries and disk after the successful un-install) I rebooted the server and started a new install. Now each time I try the install it gets to the point of finalizing the install and then does a roll back (which is successful since there is no residual of the install). Looking at the log file I have this: [14:11:02]: Info: :Info:Error while connecting to management server: The Data Access service is either not running or not yet initialized. Check the event log for more information. [14:11:02]: Error: :Couldn't connect to mgt server stack: : Threw Exception.Type: Microsoft.EnterpriseManagement.Common.ServiceNotRunningException, Exception Error Code: 0x80131500, Exception.Message: The Data Access service is either not running or not yet initialized. Check the event log for more information. [14:11:02]: Error: :StackTrace: at Microsoft.EnterpriseManagement.Common.Internal.ExceptionHandlers.HandleChannelExceptions(Exception ex) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.CreateEndpoint[T](EnterpriseManagementConnectionSettings connectionSettings, SdkChannelObject`1 channelObjectDispatcherService) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.ConstructEnterpriseManagementGroupInternal[T,P](EnterpriseManagementConnectionSettings connectionSettings, ClientDataAccessCore clientCallback) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.RetrieveEnterpriseManagementGroupInternal[T,P](EnterpriseManagementConnectionSettings connectionSettings, ClientDataAccessCore callbackDispatcherService) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.Connect[T,P](EnterpriseManagementConnectionSettings connectionSettings, ClientDataAccessCore callbackDispatcherService) at Microsoft.EnterpriseManagement.ManagementGroup.InternalInitialize(EnterpriseManagementConnectionSettings connectionSettings, ManagementGroupInternal internals) at Microsoft.EnterpriseManagement.OperationsManager.Setup.ReportingComponent.GetExistingManagementServerFromOMDB(String omSQLServer, Nullable`1 omSqlPort, String omDatabaseName, String& firstWorkingManagementServer) [14:11:02]: Error: :Inner Exception.Type: System.ServiceModel.EndpointNotFoundException, Exception Error Code: 0x80131500, Exception.Message: Could not connect to net.tcp://vmccscom.ad.bmhcc.org:5724/DispatcherService. The connection attempt lasted for a time span of 00:00:02.0047545. TCP error code 10061: No connection could be made because the target machine actively refused it 167.251.146.171:5724. [14:11:02]: Error: :InnerException.StackTrace: Server stack trace: at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout) at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout) 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.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 Microsoft.EnterpriseManagement.Common.Internal.IDispatcherService.Connect(SdkClientConnectionOptions connectionOptions) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.Initialize(EnterpriseManagementConnectionSettings connectionSettings, SdkChannelObject`1 channelObjectDispatcherService) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.CreateEndpoint[T](EnterpriseManagementConnectionSettings connectionSettings, SdkChannelObject`1 channelObjectDispatcherService) [14:11:02]: Error: :Inner Exception.Type: System.Net.Sockets.SocketException, Exception Error Code: 0x80131500, Exception.Message: No connection could be made because the target machine actively refused it 167.251.146.171:5724 [14:11:02]: Error: :InnerException.StackTrace: at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout) [14:11:02]: Always: :Management Server vmccscom.ad.bmhcc.org failed to connect, now trying another one. [14:11:02]: Warn: :Failed to connect to any SDK in the management group, trying again [14:11:22]: Info: :Info:trying to connect with server vmccscom.ad.bmhcc.org [14:11:28]: Info: :Info:Error while connecting to management server: The Data Access service is either not running or not yet initialized. Check the event log for more information. [14:11:28]: Error: :Couldn't connect to mgt server stack: : Threw Exception.Type: Microsoft.EnterpriseManagement.Common.ServiceNotRunningException, Exception Error Code: 0x80131500, Exception.Message: The Data Access service is either not running or not yet initialized. Check the event log for more information. [14:11:28]: Error: :StackTrace: at Microsoft.EnterpriseManagement.Common.Internal.ExceptionHandlers.HandleChannelExceptions(Exception ex) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.CreateEndpoint[T](EnterpriseManagementConnectionSettings connectionSettings, SdkChannelObject`1 channelObjectDispatcherService) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.ConstructEnterpriseManagementGroupInternal[T,P](EnterpriseManagementConnectionSettings connectionSettings, ClientDataAccessCore clientCallback) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.RetrieveEnterpriseManagementGroupInternal[T,P](EnterpriseManagementConnectionSettings connectionSettings, ClientDataAccessCore callbackDispatcherService) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.Connect[T,P](EnterpriseManagementConnectionSettings connectionSettings, ClientDataAccessCore callbackDispatcherService) at Microsoft.EnterpriseManagement.ManagementGroup.InternalInitialize(EnterpriseManagementConnectionSettings connectionSettings, ManagementGroupInternal internals) at Microsoft.EnterpriseManagement.OperationsManager.Setup.ReportingComponent.GetExistingManagementServerFromOMDB(String omSQLServer, Nullable`1 omSqlPort, String omDatabaseName, String& firstWorkingManagementServer) [14:11:28]: Error: :Inner Exception.Type: System.ServiceModel.EndpointNotFoundException, Exception Error Code: 0x80131500, Exception.Message: Could not connect to net.tcp://vmccscom.ad.bmhcc.org:5724/DispatcherService. The connection attempt lasted for a time span of 00:00:02.0018250. TCP error code 10061: No connection could be made because the target machine actively refused it 167.251.146.171:5724. [14:11:28]: Error: :InnerException.StackTrace: Server stack trace: at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout) at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout) 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.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 Microsoft.EnterpriseManagement.Common.Internal.IDispatcherService.Connect(SdkClientConnectionOptions connectionOptions) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.Initialize(EnterpriseManagementConnectionSettings connectionSettings, SdkChannelObject`1 channelObjectDispatcherService) at Microsoft.EnterpriseManagement.Common.Internal.SdkDataLayerProxyCore.CreateEndpoint[T](EnterpriseManagementConnectionSettings connectionSettings, SdkChannelObject`1 channelObjectDispatcherService) [14:11:28]: Error: :Inner Exception.Type: System.Net.Sockets.SocketException, Exception Error Code: 0x80131500, Exception.Message: No connection could be made because the target machine actively refused it 167.251.146.171:5724 [14:11:28]: Error: :InnerException.StackTrace: at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) at System.Net.Sockets.Socket.Connect(EndPoint remoteEP) at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout) [14:11:28]: Always: :Management Server vmccscom.ad.bmhcc.org failed to connect, now trying another one. [14:11:28]: Warn: :Failed to connect to any SDK in the management group, trying again [14:11:48]: Error: :Error:Could not connect to management group. Can not continue with DW upgrade... [14:11:48]: Info: :Info:got MG connection [14:11:48]: Error: :Error:Could not connect to management group. Cannot continue with current action... [14:11:48]: Error: :FATAL ACTION: GetManagementGroup [14:11:48]: Error: :FATAL ACTION: DWInstallActionsPostProcessor [14:11:48]: Error: :ProcessInstalls: Running the PostProcessDelegate returned false. [14:11:48]: Always: :SetErrorType: Setting VitalFailure. currentInstallItem: Data Warehouse Configuration [14:11:48]: Error: :ProcessInstalls: Running the PostProcessDelegate for OMDATAWAREHOUSE failed.... This is a fatal item. Setting rollback. [14:11:48]: Info: :SetProgressScreen: FinishMinorStep. [14:11:48]: Always: :!***** Installing: POSTINSTALL *** [14:11:48]: Info: :ProcessInstalls: Rollback is set and we are not doing an uninstall so we will stop processing installs [14:11:48]: Always: :**************************************************************** [14:11:48]: Always: :****Starting*RollBack******************************************* [14:11:48]: Always: :**************************************************************** Anyone got any ideas on why this is failing?

Hi "[14:11:28]: Error: :Inner Exception.Type: System.ServiceModel.EndpointNotFoundException, Exception Error Code: 0x80131500, Exception.Message: Could not connect to net.tcp://vmccscom.ad.bmhcc.org:5724/DispatcherService. The connection attempt lasted for a time span of 00:00:02.0018250. TCP error code 10061: No connection could be made because the target machine actively refused it 167.251.146.171:5724." Do you have SQL on the same server as the Management Server? 1) Make sure the databases no longer exist. 2) Check SQL Server error logs for any errors e.g. permissions Cheers Graham Regards Graham New System Center 2012 Blog! - http://www.systemcentersolutions.co.uk View OpsMgr tips and tricks at http://systemcentersolutions.wordpress.com/

Would also check for SQL first if any databases still exist there. Also check the registry hklm\software\microsoft\microsoft operations manager\ if it is there and what it contains. if machine is empty (clean install you say..) it should not e there anymore. See what happens. Bob Cornelissen - BICTT (My Blog about SCOM) - MVP 2012 and Microsoft Community Contributor 2011 Recipient

The regkey still existed, once it was remove I was able to install the management server.

I've got a similar error (Couldn't connect to mgt server stack) at SCOM 2012 install. Prior to setup, registry key did not exist. SQL on remote server has no OperationsManager database. Still can not install. Setup seems to not be able to start OpsMgr Data Access Service at Management server setup step and after several retries gives up. After that setup is rolled back. Account used to start service is a domain account. All prerequisites are OK. What else can be checked?

GintarasV, try remove the computer account (DOMAIN\COMPUTERNAME$) from Security\Logins section in SQL Server. This worked to me.Uellington Santos MCITP Enterpise Administrator