will installing schema ver 88 without raising domain/forest funtional level break Exchange Server 2010 SP3

Anthony Bakker
Anthony Bakker used Ask the Experts™
I hope this makes sense, this is about as plain as I can describe.  I searched everywhere for an answer.
Current setup-
Individual Servers
 -   Windows Server 2012 Dc's, Functional Levels -  Windows Server 2012
Exchange 2010 SP3

A requirement is to install Windows Server 2019 schema (ver 88) without raising forest/domain levels
My question is, will this break exchange 2010 sp3 ?
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Senior Network Systems Specialist
No, it will update the schema by adding more properties to the objects in ACtive Directory, it will not remove any properties and it will not change the existing configuration. Otherwise it would make it impossible to migrate from earlier versions of Exchange to later versions. We recently updated schema from Exchange 2010 SP3 to Exchange 2016 with no problems.
AmitIT Architect
Distinguished Expert 2017

If i understand correctly, you want to install Windows 2019 OS only in your environment. Or you are asking to install Exchange 2019?

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