SharePoint Error: Metadata backend service request ExpectedFailure: Metadata backend service request failed in a authorized access exception: System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: AccessDeniedEx:The current user has insufficient permissions to perform this operation.
I got the following error:
Exception returned from back end service. System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: AccessDeniedEx:The current user has insufficient permissions to perform this operation. (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is: System.UnauthorizedAccessException: AccessDeniedEx:The current user has insufficient permissions to perform this operation. at Microsoft.SharePoint.Taxonomy.MetadataWebServiceApplication.CheckPermission(SPIisWebServiceApplicationRights requiredPermissions) at Microsoft.SharePoint.Taxonomy.TaxonomyDatabaseMapper.GetTermSetWithAllTerms(Guid rawPartitionId, Guid termSetGuid, Boolean includeDeprecated, Boolean limitMembership) at Microsoft.SharePoint.Taxonomy.MetadataWebServiceApplication.GetTermSetWithAllTerms(Guid rawPartitionId, Guid termSetGuid, Boolean includeDeprecated, Boolean limitMembership) at SyncInvokeGetTermSetWithAllTerms(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatche…).
Metadata backend service request ExpectedFailure: Metadata backend service request failed in a authorized access exception: System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: AccessDeniedEx:The current user has insufficient permissions to perform this operation. (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is: System.UnauthorizedAccessException: AccessDeniedEx:The current user has insufficient permissions to perform this operation. at Microsoft.SharePoint.Taxonomy.MetadataWebServiceApplication.CheckPermission(SPIisWebServiceApplicationRights requiredPermissions) at Microsoft.SharePoint.Taxonomy.TaxonomyDatabaseMapper.GetTermSetWithAllTerms(Guid rawPartitionId, Guid termSetGuid, Boolean includeDeprecated, Boolean limitMembership) at Microsoft.SharePoint.Taxonomy.MetadataWebServiceApplication.GetTermSetWithAllTerms(Guid rawPartitionId, Guid termSetGuid, Boolean includeDeprecated, Boolean limitMembership) at SyncInvokeGetTermSetWithAllTerms(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatche…).
Solution
If you are running your Search Service Application using a different account than the farm account then you need to grant “Full Control” permission the this account on the Managed Metadata Service Application!