This is the December 2025 refresh of Windows Server 2022 LTSC, combining the original 21H2 release with the latest cumulative update (LCU), servicing stack update (SSU), and security fixes up to December 2025. It is intended for long-term deployment in environments requiring stability, security, and minimal feature churn over a 10-year lifecycle.
Windows Server 2022 LTSC 21H2 is the core foundation for modern enterprise data centers, offering a secure, high-performance platform for critical workloads. The (specifically KB5048654 ) provides essential security fixes and performance stability for the x64 architecture, ensuring your environment remains protected against emerging threats. Key Features of Version 21H2 windows server 2022 ltsc 21h2 x64 english decem updated
Increase the MaxTicketAge registry value on the PDC emulator (not recommended unless diagnosed). This is the December 2025 refresh of Windows
Key note: The December 2024 update (DecEM) does NOT add new features. It enhances security and fixes bugs within the LTSC framework. It enhances security and fixes bugs within the