Domain Controller continuous reboot after installing update KB5082198

Mayoraz Nicolas 0 Reputation points
2026-04-17T08:02:10.6533333+00:00

We have installed the update KB5082198 on one of our Domain Controller hosted on a Virtual Machine.

Since then, the Domain Controller is rebooting again and again : each time trying to install the update for some times and then rebooting.

Has anyone encountered the same problem and how did you solved it ?

Thanks in advance.

Microsoft Security | Active Directory Federation Services
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  1. AI answer

    2026-04-17T08:02:22.0533333+00:00

    KB5082198 is not covered in the provided material, but there is directly relevant guidance for domain controllers that get stuck in a reboot/rollback loop after an OS update or in-place upgrade.

    For a DC that repeatedly reboots while trying to complete an update, the supported recovery pattern is to allow the setup/servicing engine to detect the failed upgrade and roll back to the previous OS state:

    1. Continue rebooting the affected domain controller.
    2. After the permanent hang/loop is detected, reboot the server twice in succession.
    3. Setup should then detect the failed upgrade attempt and automatically roll back the system to the previous OS version and state.
    4. After rollback, the DC should return to its previous, healthy state without data loss.

    If the DC remains stuck and cannot complete rollback, the documented workaround is to:

    1. Bring up new, healthy domain controllers (preferably on different physical or virtual machines) running the target OS version instead of trying to in-place upgrade the problematic DC.
    2. Once the new DCs are promoted and replicating correctly, retire or rebuild the problematic DC.

    These steps avoid leaving the forest dependent on a DC that is stuck in an unstable update state and align with recommended practice for domain controller OS upgrades.

    References:

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