Setup /PrepareAD /TenantOrganizationconfig when upgrading exchange2010 to 2016 MINIMAL

Question

Hi ,

when upgrading an exchange2010 (which is in minimal hybrid mode, not full hybrid mode) - do you need to run the below command or can you just run the schemaprep ?
Setup /PrepareAD /TenantOrganizationconfig:

kind regards,
Filip

Answer 1

Ok gotcha,
Since this is a minimal hybrid, see if the hybrid object is there
Get-HybridConfiguration

If not, then that switch is prob not required.

Answer 2

All the prep steps need to be run. However, if you run Exchange Setup and you have the necessary perms and its a single domain forest, all the prep steps are run automatically for you:
https://blog.rmilne.ca/2021/05/13/does-exchange-setup-automatically-run-prepareschema/?utm_source=rss&utm_medium=rss&utm_campaign=does-exchange-setup-automatically-run-prepareschema

Its also run automatically if:

https://learn.microsoft.com/en-us/exchange/plan-and-deploy/prepare-ad-and-domains?view=exchserver-2019

Answer 3

Hi ,
the account has all the necessary rights - its rather a small environment and i know that the GUI will execute all the steps that are required.
Above article is when you are updating the server to a higher CU.

My question is about the schemaprep when installing a new exchange2016 next to a 2010 that is installed with a MINIMAL hybrid.
So there are no tls connectors, free/busy sharing ... The minimal has just enabled that mailboxes can be migrated to O365 as the customer already had AADconnect.
All mailboxes are in the cloud.

https://www.c-sharpcorner.com/article/hybrid-exchange-2010-to-hybrid-exchange-2016-part-one/
https://blog.rmilne.ca/2021/05/10/tenantorganizationconfig-required-when-preparing-active-directory/
https://practical365.com/installing-the-first-exchange-2016-server-fails-in-hybrid-environment/

kind regards,
Filip

Answer 4

it gives me output so it is detected as a hybrid (even though it was a minimal)
Thanks for the answer , helpfull as always !

kind regards,
Filip