DC fails to replicate after January 2022 & March 2022 Patches

309ra 21 Reputation points

We have an issue with a DC that is Server 2016. We installed the January 2022 patch and replication started to fail. We know there was an OOB patch, but we didn't apply it. We removed the January 2022 patch and everything worked again. We decided to skip February and installed the SSU and patch for March 2022 and the same issue happened. RPC 1722 server is unavailable error.

We have other Server 2016 DC's that got the same patches and no issues. Has anyone seen this problem?

Windows Server 2016
Windows Server 2016
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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Accepted answer
  1. Dave Patrick 426.2K Reputation points MVP

    Dcom errors should be unrelated. If replication fails there should be errors recorded in the event log. Not sure what you're seeing but you could try a non authoritative sync. If using older FRS you can follow along here.
    or for DFSR follow along here.

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

    1 person found this answer helpful.

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  1. Dave Patrick 426.2K Reputation points MVP

    What's in the system and DFS Replication event logs?

    1 person found this answer helpful.