Windows Server 2019: Update KB5009616 causes DNS problems

Windows[German]Update KB5009616 – or successor updates – released in January 2022 can cause DNS issues on Windows Server 2019. Microsoft has admitted this in a support article. This problem can be corrected with a KIR function provided on 23 March 2022 via rollback. Here is a brief overview of the issue.


The cumulative preview update KB5009616 was released on 25 January 2022 (see Windows 10 / Windows Server Preview Update (Jan. 25, 2022)). Once this or one of the follow-up updates from February or March 2022 has been installed, you may experience DNS issues on Windows Server 2019. .

Microsoft confirms the issue

Microsoft first opened the case on 22 March 2022, and confirmed it within the post DNS stub zones might fail to load, which might cause DNS resolution issues in the Windows 10 version 1809/Windows Server 2019 status area.

After installing updates released January 25, 2022 (KB5009616) and later on affected versions of Windows Server running the DNS Server role, DNS stub zones might not load correctly, which might cause DNS name resolution to fail.

Once the January 2022 Preview Update KB5009616 or any of the subsequent updates have been installed on Windows Server 2019 with the DNS server role enabled, DNS stub zones may not load correctly. This may cause DNS name resolution to fail.

A stub zone is a copy of a Domain Name System (DNS) zone that contains only resource records that identify the DNS servers for that zone.

Fix only by KIR

Microsoft has provided a fix via Known Issue Rollback (KIR)  as of 23 March 2022. The patch in question is rolled back via KIR. In managed environments such as Windows Server 2019, KIR does not run automatically but must be triggered by the administrator. For Windows Server 2019 that have an affected update installed and are experiencing this issue, administrators must take action. Two special group policies are available for installation, which will then trigger the KIR function to fix the issue. (via)

For information on deploying and configuring these special group policies, see How to use Group Policy to deploy a Known Issue Rollback.

GPO-Download 1 for Windows Server 2019
GPO Download 2 for Windows Server 2019


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