Exchange 2013 CU10 - Folder Hierarchies error

Hi all,

           in order to move to exchange 2016, im upgrading exchange 2013 to CU10.

When trying to move to CU10 on exchange 2013, I get the following error during the first phase of setup.

The following error was generated when "$error.Clear();

               install-AdministrativeGroup -DomainController $RoleDomainController

" was run: "Microsoft.Exchange.Data.Directory.ADObjectAlreadyExistsException: Active Directory operation failed on AD03.company.com. The object 'CN=Folder Hierarchies,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=Company,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=company,DC=com' already exists. ---> System.DirectoryServices.Protocols.DirectoryOperationException: The object exists.

  at System.DirectoryServices.Protocols.LdapConnection.ConstructResponse(Int32 messageId, LdapOperation operation, ResultAll resultType, TimeSpan requestTimeOut, Boolean exceptionOnTimeOut)

  at System.DirectoryServices.Protocols.LdapConnection.SendRequest(DirectoryRequest request, TimeSpan requestTimeout)

  at Microsoft.Exchange.Data.Directory.PooledLdapConnection.SendRequest(DirectoryRequest request, LdapOperation ldapOperation, Nullable`1 clientSideSearchTimeout, IActivityScope activityScope, String callerInfo)

  at Microsoft.Exchange.Data.Directory.ADDataSession.ExecuteModificationRequest(ADObject entry, DirectoryRequest request, ADObjectId originalId, Boolean emptyObjectSessionOnException, Boolean isSync)  --- End of inner exception stack trace ---

  at Microsoft.Exchange.Data.Directory.ADDataSession.AnalyzeDirectoryError(PooledLdapConnection connection, DirectoryRequest request, DirectoryException de, Int32 totalRetries, Int32 retriesOnServer)

  at Microsoft.Exchange.Data.Directory.ADDataSession.ExecuteModificationRequest(ADObject entry, DirectoryRequest request, ADObjectId originalId, Boolean emptyObjectSessionOnException, Boolean isSync)

  at Microsoft.Exchange.Data.Directory.ADDataSession.ExecuteModificationRequest(ADObject entry, DirectoryRequest request, ADObjectId originalId, Boolean emptyObjectSessionOnException)

  at Microsoft.Exchange.Data.Directory.ADDataSession.Save(ADObject instanceToSave, IEnumerable`1 properties, Boolean bypassValidation)

  at Microsoft.Exchange.Management.Deployment.InstallAdministrativeGroup.InstallConfigurationObject[TObject](ADObjectId id, Boolean force, TObject instance)

  at Microsoft.Exchange.Management.Deployment.InstallAdministrativeGroup.InternalProcessRecord()

  at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()

  at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".

Using ADSIedit, I can see that the "Folder Hierarchies" does indeed already exist, as it should, and have verified the permissions on the key, allowing the exchange servers full control.

The same error occurs if run from the gui or command "setup.exe /p /IAcceptExchangeServerLicenseTerms" from any of the exchange 2013 servers or DC's.