The 2022 R3 Smart Client is generally backward compatible with older XProtect VMS versions (like 2021 or 2022 R1), but it is best practice to keep your server and client versions aligned.
The Milestone XProtect Smart Client is a comprehensive video management software solution that provides users with a flexible and feature-rich interface for monitoring, managing, and analyzing video surveillance footage. milestone xprotect smart client 2022 r3 download full