Active directory upgrade

Question

Hello,

We are working on Active directory upgrade from 2012 R2 to 2019. There is a trust relationship that exist between the primary domain and other domains (around 15). With some of them the trust is bidirectional and with some inbound/outbound. The concern is when we promote new 2019 domain controllers or demote old 2012 r2 domain controllers will it effect the trust relationship between domains ?

Please, Suggest.

Thanks,

Pranay.

Answer 1

The domain trusts would be unaffected by these upgrades.

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Answer 2

Hi Patrick,

Thanks for the reply, can you also suggest the reason behind this or any good article which discusses this.

Thanks,
Pranay.

Answer 3

Here's a couple of discussions on this topic.
https://social.technet.microsoft.com/Forums/lync/en-US/00cc2cc9-b4b5-42d8-9484-b475a8354b36/twoway-trust-in-two-forests-with-difference-functional-level-after-transfer-fsmo-roles?forum=winserverDS#:~:text=No%2Cit%20won%27t%20effect,be%20remain%20on%20the%20domain.

https://social.technet.microsoft.com/Forums/en-US/a4f01cac-5174-49bd-a938-e67ffd76af68/forest-trust-relationship-and-raising-forest-domain-funtional-levels?forum=winserverDS

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