Microsoft is enforcing a new kernel trust policy affecting Windows versions 11 24H2, 25H2, 26H1, and Windows Server 2025 to enhance security and integrity. This policy follows the deprecation of a previous program in 2021, which expired associated certificates, although third-party drivers signed by that program remain broadly trusted. Initially, systems will enter an evaluation mode to monitor and audit driver loads for compatibility issues, lasting until a runtime of 100 hours and 2-3 boot-start restarts are achieved. If all drivers are deemed trustworthy, the new policy will be activated; otherwise, the system will stay in evaluation mode until compliance issues are resolved.