Microsoft will discontinue support for virtualization-based security enclaves (VBS enclaves) in Windows 11 versions 23H2 and 22H2, as well as in Windows Server versions 2022, 2019, and 2016. Support for VBS enclaves will only be retained in Windows 11 version 24H2 and later, and in Windows Server 2025 and later. VBS enclaves enhance memory operation security by creating virtual trust levels within a Trusted Execution Environment. Microsoft previously addressed a privilege escalation vulnerability within VBS enclaves (CVE-2025-21370) and plans to integrate the Rust programming language into the Windows kernel starting with Windows 11 version 23H2 in 2024.