2022 Ltsc 21h2 X64 English Decem Updated [new]: Windows Server

Windows Server 2022 LTSC 21H2 x64: A Reliable and Secure Server Operating System

The keyword that has recently gained significant traction among IT professionals and system administrators is: "Windows Server 2022 LTSC 21H2 x64 English DecEM Updated." This refers to the December 2024 cumulative update package (often colloquially shortened to "DecEM" or December Update) for the English x64 version of Windows Server 2022 LTSC. windows server 2022 ltsc 21h2 x64 english decem updated

. A "December updated" version generally refers to an installation image that includes the December 2025 cumulative update (KB5071547) , bringing the OS to Build 20348.4529 Microsoft Support Key Features of Windows Server 2022 LTSC Windows Server 2022 LTSC 21H2 x64: A Reliable

5.3. Post-Installation Crucial Steps (December-Specific)

Install the OOB update if you use clustering (mentioned in known issues).
Verify SMB signing status after December update:
```
Get-SmbServerConfiguration | Select EnableSMBSigning
```
Expected output: True.
Run sfc /scannow – The December patch made several system file changes; verify integrity.
Reboot twice – A second reboot resolves most post-update latency artifacts.

Cause: The December hardening of NETLOGON combined with certain network switch configurations. Install the OOB update if you use clustering