MicrosoftMicrosoftSo here we are with Exchange 2010 end of support coming soon on October 13, 2020 and no supported way to decommision last exchange server.
so now we are attempting to install an Exchange 2016 server on Server 2016 to replace the 2010 server.
Since the Exchange 2016 server ISO now insists on detecting for Hybrid environments, complexity has been introduced to the Schema update phase causing setup.exe to fail.
There does not seem to be a clear path to get 2016 successfully installed.
Exchange Online support refuses to help us as they state that this is an issue for the Exchange Onprem team.
We are not an enterprise customer and thus do not have support fo onprem exchange, however we have support for Exchange Online.
setup.exe is failing within communications to exchange online so they should support us.
We don't even want to have an onprem Exchange server but Microsoft has made this a requirement for the admin tools.
Currently have Full Hydrid Exchange 2010 - Office 365 environment. Working great.
Need to decommision exchange 2010 server and replace with exchange 2016 hybrid only.
trying to install exchange 2016 CU17 ISO on a fresh Windows Server 2016 install
all prerequisites done according to :
https://docs.microsoft.com/en-us/exchange/plan-and-deploy/deploy-new-installations/install-mailbox-role?view=exchserver-2016
Install account is a member of domain admins, enterprise admins and schema admins.
setup.exe fails in Hybrid Deployment Check: Deserialization fails
Found documents stating that setup.exe wizard cannot be used in hybrid environment. The PrepareAD command must be run manually with the /TenantOrganizationConfig switch
/TenantOrganizationConfig switch requires the Org Tenant XML file
Found document explaining the use of following command to get Org Tenant XML file:
Get-OrganizationConfig | Export-clixml -Path C:\temp\Tenant.xml
Found various documents stating that PrepareAD still fails with /TenantOrganizationConfig switch.
Following document talks about registry key to bypass Hydrid detection during install:
https://social.technet.microsoft.com/Forums/en-US/05c1e110-67a7-4941-8995-4899dc27543f/exchange-2016-prepare-ad-fails-with-systemaccessviolationexception?forum=Exch2016SD
What is the correct method to proceed?
When is Microsoft going to develop a tool for recipient management that does not require on Onprem exchange server?
