This error occurred when clicking “FAST Search Keywords” within the site collection.
Error from ULS Logging :
Admin OM Exception occurred. Message: Failed to communicate with the WCF service. , Error Code:e107, Stacktrace:Microsoft.SharePoint.Search.Extended.Administration.Common.AdminException: Failed to communicate with the WCF service. —> System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: The trust relationship between the primary domain and the trusted domain failed. (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is: System.SystemException: The trust relationship between the primary domain and the trusted domain failed. at System.Security.Principal.NTAccount.TranslateToSids(IdentityReferenceCollection sourceAccounts, Boolean& someFailed) at System.Security.Principal.NTAccount.Translate(IdentityReferenceCollection sourceAccounts, Type targetType, Boolean forceSuccess) at System.Security.Permissions.IDRole.get_Sid() at System.Security.Permissions.PrincipalPermission.Demand() at System.Security.PermissionSet.DemandNonCAS() at Microsoft.SharePoint.Search.Extended.Administration.WCF.KeywordServiceImpl.GetNamedSearchSettingGroup(String name) at SyncInvokeGetNamedSearchSettingGroup(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageR…). — End of inner exception stack trace — at Microsoft.SharePoint.Search.Extended.Administration.WCF.ServiceClientExceptionHandler.TranslateException(Exception e) at Microsoft.SharePoint.Search.Extended.Administration.Common.ServiceClientExceptionHandlingInterceptor.Execute[T](Func`1 target, String errorCode, String[] values) at Microsoft.SharePoint.Search.Extended.Administration.Common.ServiceClientExceptionHandlingInterceptor.Execute[T](Func`1 target) at Microsoft.SharePoint.Search.Extended.Administration.WCFClient.SearchSettingGroupCollectionImplWCF.GetSearchSettingGroup(String groupName) at Microsoft.SharePoint.Search.Extended.Administration.WCFClient.SearchSettingGroupCollectionImplWCF.ContainsSearchSettingGroup(String groupName) at Microsoft.Office.Server.Search.Extended.Administration.Facade.AdminOMHelperBase..ctor(String siteID) at Microsoft.Office.Server.Search.Extended.Administration.Facade.KeywordHelper..ctor(String siteId) at Microsoft.Office.Server.Search.Extended.Administration.Internal.UI.ContextualKeywordManagement.OnLoad(EventArgs e)
Resolution :
This customer had both DNS issues with the domain controllers in there development environment and they had inactive trusts that remained due to an old company merger.
Warning:
Important: