WIndows server 2003 and exchange 2007 I get this error this morning when i try to connect Microsoft exchange Can some one help Microsoft.Exchange.Configuration.MonadDataProvider.ConnectionPool.GetPooledRunspace(Int32 timeout, MonadConnection connection) at Microsoft.Exchange.Configuration.MonadDataProvider.MonadConnection.Open() at System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState) at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataTable dataTable) at Microsoft.Exchange.Management.SystemManager.DataTableLoader.Fill(RefreshRequestEventArgs e) at Microsoft.Exchange.Management.SystemManager.DataTableLoader.OnDoRefreshWork(RefreshRequestEventArgs e) at Microsoft.Exchange.Management.SystemManager.RefreshableComponent.worker_DoWork(Object sender, DoWorkEventArgs e) at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument) The type initializer for 'System.Management.Automation.Runspaces.InitialSessionState' threw an exception. at System.Management.Automation.SessionStateInternal.AddBuiltInVariables() at System.Management.Automation.SessionStateInternal.AddBuiltInEntries(Boolean addSetStrictMode) at System.Management.Automation.Runspaces.LocalRunspace.InitializeDefaults() at System.Management.Automation.Runspaces.LocalRunspace.DoOpenHelper() at System.Management.Automation.Runspaces.RunspaceBase.CoreOpen(Boolean syncCall) at Microsoft.Exchange.Configuration.MonadDataProvider.ConnectionPool.CreateRunspace() at Microsoft.Exchange.Configuration.MonadDataProvider.ConnectionPool..cctor() Cannot find the type for custom attribute 'Parameter'. Make sure that the assembly that contains this type is loaded. at System.Management.Automation.AttributeNode.GetCustomAttributeObject() at System.Management.Automation.AttributeNode.GetCustomAttribute() at System.Management.Automation.ParameterNode.GetRuntimeDefinedParameter(Boolean isCmdlet) at System.Management.Automation.ParameterDeclarationNode.InitializeRuntimeDefinedParameters(Boolean& useCmdletBinding) at System.Management.Automation.ScriptBlock.InitializeAttributesAndParameters() at System.Management.Automation.ScriptBlock.get_CmdletBindingAttribute() at System.Management.Automation.CommandMetadata..ctor(ScriptBlock scriptblock, String commandName, ExecutionContext context) at System.Management.Automation.ScriptBlock.get_ParameterMetadata() at System.Management.Automation.Runspaces.SessionStateFunctionEntry..ctor(String name, String definition) at System.Management.Automation.Runspaces.InitialSessionState..cctor() sjumma

Sorry i just closed and open again got resolvedsjumma