The x64 platform is the only supported architecture. The English version is crucial because it:
After installing the December updated version, register the server with Azure Arc. Then query: windows server 2022 ltsc 21h2 x64 english decem updated
DECEMBER_2024_SERVER_2022_EN-US_X64.ISO SHA-256: [Example] 4A2F8E9D3B1C7F5A6E8D2B4F7C9A1E3D5B8C7F9A2E4D6B1C8A7F9E3D5B1C8A The x64 platform is the only supported architecture
Verdict
This is a – you do not need to install previous months’ patches. The next Preview Update is expected in January 2026, with another security-only release on Patch Tuesday (January 13, 2026). windows server 2022 ltsc 21h2 x64 english decem updated