Hi Team, We have an Exchange 2016 CU15 DAG running 2 Servers.We are in the process of Ugrading to CU19,Schema Update went fine, But we are struck at prepareAD with the following error message.
Microsoft Exchange Server 2016 Cumulative Update 19 Unattended Setup Copying Files... File copy complete. Setup will now collect additional information needed for installation. Performing Microsoft Exchange Server Prerequisite Check Prerequisite Analysis COMPLETED Configuring Microsoft Exchange Server Organization Preparation FAILED The following error was generated when "$error.Clear(); buildToBuildUpgrade-ExsetDataAtom -AtomName OrgLevelCt -DomainController $RoleDomainController " was run: "Microsoft.Exchange.Management.Deployment.ExsetdataException: An error occurred with error code '2147942405' and message 'Access denied.'. at Microsoft.Exchange.Configuration.Tasks.Task.ThrowTerminatingError(Exception exception, ErrorCategory category, Object target) at Microsoft.Exchange.Management.Deployment.ManageExsetdataAtom.HandleExsetdataReturnCode(UInt32 scErr) at Microsoft.Exchange.Management.Deployment.ManageExsetdataAtom.BuildToBuildUpgradeAtom(AtomID atomID) at Microsoft.Exchange.Management.Deployment.BuildToBuildUpgradeExsetdataAtom.InternalProcessRecord() at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__91_1() at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)". The Exchange Server setup operation didn't complete. More details can be found in ExchangeSetup.log located in the <SystemDrive>:\ExchangeSetupLogs folder.
We tried to Uninstall AV but receive the same error message. User Running setup using elevated cmd is part of SchemaAdmins,EnterpriseAdmins,DomainAdmins,ExchangeOrganizationManagement.
Looking for help to resolve the issue.
Thanks and Regards