SCOM 2019 Integration for EM error- Connection test failed: SCOM Event connector failed. System.TypeLoadException: Method 'GetCachedObject' in type..DescriptionSCOM 2019 Integration for EM error- Connection test failed: SCOM Event connector failed. System.TypeLoadException: Method 'GetCachedObject' in type.. Exact error is: Connection test failed: SCOM Event connector failed. System.TypeLoadException: Method 'GetCachedObject' in type 'Microsoft.EnterpriseManagement.MonitoringInstancesManagement' from assembly 'Microsoft.EnterpriseManagement.OperationsManager, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMarkHandle stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName, ObjectHandleOnStack type)at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean loadTypeFromPartialName)at System.Type.GetType(String typeName, Boolean throwOnError)at Microsoft.EnterpriseManagement.ConfigurationReaderHelper.ProcessComponent(String componentId, XPathNavigator componentNavigator, IDictionary`2 pendingComponents, IContainer container)at Microsoft.EnterpriseManagement.ConfigurationReaderHelper.ReadComponents(XPathNavigator navi, IContainer container)at Microsoft.EnterpriseManagement.ManagementGroup.InternalInitialize(EnterpriseManagementConnectionSettings connectionSettings, ManagementGroupInternal internals)at Microsoft.EnterpriseManagement.ManagementGroupInternal.InstantiateManagementGroup(EnterpriseManagementGroup group)at Microsoft.EnterpriseManagement.EnterpriseManagementGroupInternal.Initialize(SdkDataLayerProxyCore sdkDataLayerProxy, EnterpriseManagementConnectionSettings connectionSettings)at Microsoft.EnterpriseManagement.EnterpriseManagementGroupInternal.Create[T](SdkDataLayerProxyCore sdkDataLayerProxy, EnterpriseManagementConnectionSettings connectionSettings)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 SCOMClient.Program.Main(String[] args) CauseFrom the error message, we can see: 'Microsoft.EnterpriseManagement.MonitoringInstancesManagement' from assembly 'Microsoft.EnterpriseManagement.OperationsManager, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. In the error message, we have Version=7.0.5000.0, this is SCOM 2012. The target SCOM server of the connector is on SCOM 2019, which should be on version 10.19.N The likely cause is that the dll files under <MID Install folder>/extlib is on wrong version. ResolutionThe dll files are generally uploaded via MID Server > JAR Files. Please follow doc below to review and reupload the files: Configure the SCOM connector instance