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IPKW-0699 asked DSPatrick answered

Upgrading Windows 2008RTM AD to Windows 2019 AD

Hi,

Thank you for the help in advance.

We just inherited this AD. We are planning to upgrade it to W2019 AD ASAP. We understand that 2008 RTM is older than 2008R2. We don't think the upgrade path is straight forward. Are there any pitfall and extra steps that we need to look out for? We appreciate any suggestions/guidance you can offer.

Thanks,

KW

windows-serverwindows-active-directory
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DSPatrick answered

Just checking if there's any progress or updates?

--please don't forget to upvote and Accept as answer if the reply is helpful--


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DSPatrick answered

Yes, it can work.

The two prerequisites to introducing the first 2019 domain controller are that domain functional level needs to be 2008 or higher and older sysvol FRS replication needs to have been migrated to DFSR
https://techcommunity.microsoft.com/t5/Storage-at-Microsoft/Streamlined-Migration-of-FRS-to-DFSR-SYSVOL/ba-p/425405

I'd use dcdiag / repadmin tools to verify health correcting all errors found before starting any operations. Then stand up the new 2019, patch it fully, license it, join existing domain, add active directory domain services, promote it also making it a GC (recommended), transfer FSMO roles over (optional), transfer pdc emulator role (optional), use dcdiag / repadmin tools to again verify health, when all is good you can decommission / demote old one.


--please don't forget to upvote and Accept as answer if the reply is helpful--






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