Exchange 2013 AD prep ..

Hi Guys,

I recently deployed coexistence between exchange 2007 and exchange 2013. Everything looks great so far. I just realised that I failed to use the parameter "Setup.exe /PrepareAllDomains /IAcceptExchangeServerLicenseTerms" when running AD prep. I failed to see that the client had other domains in the exchange infrastructure. I only relaised this when the client tried to create a new user mailbox for one of the other domains.

I am of the opinion that if i run AD prep again, this issue will go away. My concern however is that I am not sure of the implication of running AD prep after I have gone live with the exchange server. Will this cause any change/break my deployment?

I have tried running AD prep on the AD of the affected domain but it fails because the schema master is on the primary domain.

MY QUESTION: what is the implication of running "Setup.exe /PrepareAllDomains /IAcceptExchangeServerLicenseTerms" on an exchange infrastructure that is in production?

Thanks for your advice guys ..

~Richard

April 13th, 2015 11:25am

It shouldn't harm anything.  Running prepare all domains should skip the domains that have already had adprep ran against it.
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April 13th, 2015 11:46am

Hi Richard,

Thank you for your question.

The command of "Setup.exe /PrepareAllDomains /IAcceptExchangeServerLicenseTerms" get Active Directory ready for Exchange is to prepare each of the Active Directory domains where Exchange will be installed or where mail-enabled users will be located. It just do some operations on AD, so it didnt have any effects on production.

In addition, before we runt the AD prep, we should run /prepare schema on forest root domain. We could refer to the following link:

https://technet.microsoft.com/en-us/library/bb125224(v=exchg.150).aspx

If there are any questions regarding this issue, please be free to let me know. 

Best Regard,

Jim

April 13th, 2015 10:13pm

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