Exchange 2019 Installation Fails at Mailbox Service Role

Question

Installing Exchange 2019 on Server 2019 Datacenter. Unable to install the Mailbox role. Error refers to SystemAttendant and access denied. Admin user performing installation is member of Enterprise Admins, Organization Management and Schema Admins. I have tried deleting the registry entries Watermark and Action. I am unable to uninstall and start over because this installation is incomplete.

Output from Administrator: PowerShell window
PS H:\> cd d:
PS D:\>
.\Setup.exe /IAcceptExchangeServerLicenseTerms /mode:Install /r:MB

Microsoft Exchange Server 2019 Cumulative Update 8 Unattended Setup

Copying Files...
File copy complete. Setup will now collect additional information needed for installation.

Languages
Mailbox role: Transport service
Mailbox role: Client Access service
Mailbox role: Mailbox service
Mailbox role: Front End Transport service
Mailbox role: Client Access Front End service

Performing Microsoft Exchange Server Prerequisite

Check Configuring Prerequisites COMPLETED
Prerequisite Analysis COMPLETED

Configuring Microsoft Exchange Server
Preparing Setup COMPLETED
Stopping Services COMPLETED
Copying Exchange Files COMPLETED
Language Files COMPLETED
Restoring Services COMPLETED
Language Configuration COMPLETED
Mailbox role: Transport service COMPLETED
Mailbox role: Client Access service COMPLETED
Mailbox role: Mailbox service FAILED

The following error was generated when "$error.Clear();
install-ExsetdataAtom -AtomName SystemAttendant
-DomainController $RoleDomainController

" was run: "Microsoft.Exchange.Management.Deployment.ExsetdataException: An error occurred with error code '3221684229' and message 'Access is 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.InstallAtom(AtomID atomID)
at Microsoft.Exchange.Management.Deployment.InstallExsetdataAtom.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.

Adding this 2019 installation to an existing 2016 environment.
Any recommendations appreciated.

--Steve

Answer 1

Seems a permission issue, would you try the solutions in the following links:
Exchange Server Troubleshooting: Unable to upgrade with error code '3221684229'
update Exchange 2016 to CU 9, update Mailbox Role Access Denied Error?
Exchange Service Pack or Rollup or Cumulative Update fails with error code '3221684229' and message 'Access is denied.'

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Answer 2

Hi,
I have the exact same problem and none of the links provided solves the problem.
Does anyone have a solution for this?

Thanks
Carlos Baptista