error during setup exchange 2019

Question

HI all,
I have a problem during the installation of Exchange 2019.

After i prepare the server with all the prerequisite
during the installation the following error appear

Error:
The following error was generated when "$error.Clear();
if ( ($server -eq $null) -and ($RoleIsDatacenter -ne $true) )
{
Update-RmsSharedIdentity -ServerName $RoleNetBIOSName
}
" was run: "Microsoft.Exchange.Data.DataValidationException: Database is mandatory on UserMailbox.
at Microsoft.Exchange.Data.Directory.ADDataSession.Save(ADObject instanceToSave, IEnumerable`1 properties, Boolean bypassValidation)
at Microsoft.Exchange.Data.Directory.Recipient.ADRecipientObjectSession.Save(ADRecipient instanceToSave, String callerFilePath, Int32 callerFileLine, String memberName)
at Microsoft.Exchange.Management.Deployment.UpdateRmsSharedIdentity.Link()
at Microsoft.Exchange.Management.Deployment.UpdateRmsSharedIdentity.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__91_1()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".

can anyone help me

Answer 1

@Andi Kovaçi

If you cannot run Exchange command from the EMS, you could have a look whether there exists issue with homeMDB for "FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042" (Under Users OU in ADUC).

Here is the setup log in my lab:

---

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

---

Answer 2

See:
https://supertekboy.com/2020/08/22/database-is-mandatory-on-usermailbox-when-installing-exchange-server/