This specifies the architecture: 64-bit. Windows Server 2022 has no 32-bit (x86) or ARM (for server, except Azure) version. x64 enables:
If you are looking for the specific December 2024 updated media, you have three legitimate options.
Pro tip: Use the Microsoft Update Catalog (
catalog.update.microsoft.com) to search for "Windows Server 2022 21H2 x64" and sort by "Last Updated" to find builds that supersede the December 2024 release.
You have three primary methods to get your existing Windows Server 2022 LTSC 21H2 systems to the December 2024 patch level.
Manual Download:
Offline Installer (MSU):
Yes. December cumulative updates are rollup – they contain all previous months’ fixes (September, October, November) unless otherwise noted in Microsoft’s release notes.
Windows Server 2022 LTSC (Version 21H2) is a major long-term servicing release that provides a stable, highly secure foundation for enterprise workloads. Built on the "Iron" codebase, this x64-based platform is designed for businesses that prioritize long-term predictability over frequent feature updates. Core Architecture and Servicing
Release Channel: As part of the Long-Term Servicing Channel (LTSC), this version receives 10 years of support: 5 years of Mainstream Support (ending October 13, 2026) followed by 5 years of Extended Support (ending October 14, 2031).
Version 21H2 vs. Others: While it shares the "21H2" string with Windows 10/11, it uses a unique server-optimized codebase, making its updates incompatible with client versions. windows server 2022 ltsc 21h2 x64 english decem updated
Installation Options: Available in Server Core (smaller footprint, no GUI) and Server with Desktop Experience (full GUI) for x64 architectures. Key Security Enhancements
Security is the cornerstone of the 2022 release, focusing on "Secured-core" technology to defend against firmware and boot-level threats.
Hardware Root-of-Trust: Utilizes TPM 2.0 for secure key storage and BitLocker drive encryption.
Firmware Protection: Uses Dynamic Root of Trust for Measurement (DRTM) and DMA protection to isolate driver memory access.
Secure Connectivity: TLS 1.3 and DNS-over-HTTPS (DoH) are enabled by default, ensuring encrypted communication channels.
SMB Security: Supports AES-256 encryption for Server Message Block (SMB) traffic, providing high-grade security for file transfers. Hybrid Cloud and Application Platform
Azure Integration: Enhanced hybrid capabilities allow for easier management through the Windows Admin Center, including Azure Arc integration and better event viewing.
Container Improvements: Reduced container image sizes by up to 40% lead to 30% faster startup times. It also introduces support for HostProcess containers for direct node management.
Networking: Features like UDP Segmentation Offload (USO) and TCP HyStart++ optimize network performance for high-speed environments. The "December Updated" Edition This specifies the architecture: 64-bit
"December Updated" typically refers to an ISO image that includes the latest Cumulative Updates (LCU) released in December of a given year. Windows Server release information | Microsoft Learn
Windows Server 2022 LTSC version 21H2 remains the current standard for Microsoft's Long-Term Servicing Channel, with the December 10, 2024 (KB5048654) update bringing the OS to Build 20348.2966. This release is designed for stability and advanced security, specifically for mission-critical workloads that do not require frequent feature changes. Key Technical Pillars of Version 21H2
Windows Server 2022 introduces a "Secured-core" foundation that integrates hardware, firmware, and the OS to protect against sophisticated threats. Advanced Multi-Layer Security
Secured-core Server: Uses TPM 2.0 and Windows Defender System Guard to ensure a secure boot and minimize firmware vulnerabilities.
VBS & HVCI: Virtualization-based security (VBS) and Hypervisor-protected Code Integrity (HVCI) prevent advanced malware from tampering with the system.
DNS over HTTPS (DoH): Encrypts DNS queries using HTTPS to prevent eavesdropping and DNS spoofing. Networking and Storage Enhancements
SMB over QUIC: Provides a secure alternative to TCP for edge connectivity, allowing file access over untrusted networks without a VPN (exclusive to Azure Edition).
AES-256 Encryption: Adds industry-standard 256-bit encryption for SMB traffic to protect against man-in-the-middle attacks.
SMB Compression: Significantly reduces network bandwidth usage and file copy times for large files like virtual machines. Scalability for High-Performance Workloads Pro tip: Use the Microsoft Update Catalog ( catalog
Supports up to 48 terabytes of RAM and 2,048 logical cores across 64 physical sockets, ideal for massive SQL Server deployments.
Nested Virtualization: Now supports AMD processors, allowing you to run Hyper-V inside a virtual machine. Update History and Lifecycle
The December 2024 cumulative update addressed 72 vulnerabilities, including 16 critical flaws across components like Hyper-V and SharePoint Server.
Windows Server 2022 LTSC (version 21H2) received its December 2025 cumulative update via
(OS Build 20348.4529) on 9 December 2025. This update is part of the Long-Term Servicing Channel (LTSC), providing the latest security fixes and stability improvements for the x64 English edition. Microsoft Support December 2025 Update Highlights KB5071547 (Build 20348.4529)
: This is the primary cumulative update for December 2025, containing essential security hardening and performance bug fixes. Servicing Stack Update (KB5068786)
: Included in the update cycle to improve the reliability of the component that installs Windows updates, ensuring your server can successfully receive future patches. Security Focus
: The update addresses various security vulnerabilities identified in Microsoft software products to protect your system from advanced threats. Installation : You can install these updates through the Windows Update menu in the Start settings or by managing them via Windows Server Update Services (WSUS) Key Features of Windows Server 2022 LTSC
As an LTSC release, version 21H2 focuses on long-term stability and deep security integration: Microsoft Learn Windows Server 2022 update history - Microsoft Support