Ensure both source and destination hosts are both on the December update or later. Mixed versions cause negotiation fallbacks.
Previously 10-second migration now takes 30+ seconds. windows server 2022 ltsc 21h2 x64 english decem updated
Key strengths
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). Ensure both source and destination hosts are both
Windows Server 2022 LTSC (version 21H2) received its December 2025 cumulative update via windows server 2022 ltsc 21h2 x64 english decem updated
Technical Overview: Windows Server 2022 LTSC (v21H2) Updated December 2025