I have been trying to install Exchange Server 2013 on Windows Server 2012 Standard 64-bit, but I end up with the error:
Active Directory must be prepared with 'Setup /PrepareAD' before
domains can be prepared for Exchange 2010. For more information,
visit:
http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.DomainPrepWithoutADUpdate.aspx
I tried preparing the AD through PowerShell using the following command:
Setup.exe /PrepareAD /OrganizationName:"Some Name" /IAcceptExchangeServerLicenseTerms
but it failed for the organization preparation with the following error:
Organization Preparation FAILED
The following error was generated when
"$error.Clear(); initialize-ExchangeUniversalGroups -DomainController
$RoleDomainController -ActiveDirectorySplitPermissions
$RoleActiveDirectorySplitPermissions" was run: "The well-known object
entry B:32:C262A929D691B74A9E068728F8F842EA:CN=Organization
Management\0ADEL:fb018bab- f964-40ca-8438-3aa9696580cf,CN=Deleted
Objects,DC=hawkmain,DC=local on the otherWellKnownObjects attribute in
the container object CN=Microsoft
Exchange,CN=Services,CN=Configuration,DC=hawkmain,DC=local points to
an invalid DN or a deleted object. Remove the entry, and then rerun
the task."
I am using the administrator account in my domain which is part of Enterprise admins and Domain admins.
Any ideas??
Best Answer
I have solved the issue by going to AD Sites and Services and deleted the Exchange Server node + deleting the Exchange Server System OU from AD Users and Computers. I got the PrepareAD command completed successfully.
I wanted to delete everything related to exchange server. In my case, I wouldn't care about loosing anything, because its a fresh installation.
the link below helped me going through this.
ref: https://social.technet.microsoft.com/Forums/lync/en-US/e7f62b79-c2c6-4495-bb4e-c3b46e1c4619/there-already-exists-an-organisation?forum=exchange2010