As you all know before Exchange Server 2013 or its Cumulative Update is installed, you need to prepare the Active Directory forest and domain(s). However you may have an on-premise Exchange Server environment co-existing with an Office 365 tenant. When this is the case and you run the /PrepareAD switch, the Prerequisite Analysis will FAIL. See below:
Setup /PrepareAD /IAcceptExchangeServerLicenseTerms
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To be able to prepare your Active Directory in a coexistence scenario with Exchange Online you would need to export your organisation configuration to an XML file. To do this:
1- Logon to your O365 tenant
2- Run
Get-OrganizationConfig | Export-clixml -Path X:\Path\filename.xml
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3- Now re-run the PrepareAD switch with the exported XML as shown below. You should be able to run it successfully.
Setup /PrepareAD /TenantOrganizationconfig:C:\ecswordONLINEOrganizationConfig.xml /IAcceptExchangeServerLicenseTerms
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You would need to follow this approach during the installation of the Cumulative Updates which would require Organisation Preparation.
ecsword
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