Can't join a 2019 or 2016 Server to an existing 2012 R2 ADFS Farm ADMIN0012 error when attempting to join

James Montgomery 0 Reputation points
2023-07-12T13:46:04.9866667+00:00

Long story short. We have a 2012 R2 ADFS Server. We want to upgrade to 2019 and started going through the process of adding the 2019 server to the 2012 Farm. Each time we go to join we get an ADMIN0012 Error. We even attempted to add node through Powershell and get the same issue with a little bit more information "Unable to synchronize local database". We attempted to add a 2016 server with same issues. However, when we added a 2012 R2 Server to see if that worked it joined with no problems. So now have two 2012 R2 Servers in farm....but no closer to adding 2019 to eventually get off the 2012 Servers. Any suggestion would be helpful....

Active Directory Federation Services
Active Directory Federation Services
An Active Directory technology that provides single-sign-on functionality by securely sharing digital identity and entitlement rights across security and enterprise boundaries.
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  1. Dave Patrick 426.2K Reputation points MVP
    2023-07-12T13:53:28.4766667+00:00

    You could follow along here.

    https://learn.microsoft.com/en-us/windows-server/identity/ad-fs/deployment/upgrading-to-ad-fs-in-windows-server

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