Note: Since “December updated” typically refers to the latest monthly rollup, I’ve assumed December 2025 for timeliness, but you can adjust the year as needed.
As we close out the year, Microsoft has rolled out the latest cumulative updates for its server operating systems. For organizations running the Long-Term Servicing Channel (LTSC) release, the Windows Server 2022 LTSC 21H2 December update brings a fresh set of security patches and stability improvements. windows server 2022 ltsc 21h2 x64 english decem updated