Secure Boot Enabled but Not Active Windows 11: Fix

If you’re encountering the message that Secure Boot is enabled but not active on your Windows 11 PC, it can be confusing and concerning, especially since Secure Boot is essential for protecting your system from rootkits and other low-level attacks. This issue often occurs when Compatibility Support Module (CSM) is enabled — a legacy BIOS compatibility feature that can interfere with Secure Boot functionality in UEFI mode. The first step to resolving the problem is to disable CSM in your motherboard’s BIOS settings. Disabling CSM allows your system to fully utilize UEFI features, which are required for Secure Boot to work correctly. After disabling CSM, it’s critical to restore Secure Boot to its standard or factory keys, sometimes referred to as Platform Keys (PK), which verify that only trusted software launches during the boot process. Once these keys are restored, reboot your system and enter the UEFI firmware settings again to re-enable Secure Boot. Following these steps usually activates Secure Boot properly and resolves any mismatches between BIOS and Windows status. Before making any BIOS changes, backing up your system is paramount. Tools like AOMEI Backupper provide an easy-to-use solution for creating full system, disk, or file backups. Keeping backups on multiple paths ensures that if anything goes wrong during the BIOS update or configuration changes, your data remains safe. Additionally, ensure that your motherboard firmware (BIOS/UEFI) is updated to the latest version, as some vendors release improvements relating to Secure Boot support and UEFI compatibility. Checking your PC manufacturer’s website for firmware updates and instructions may help maintain stable system security features. In summary, the "Secure Boot Enabled but Not Active" message in Windows 11 often signals the need to transition fully from legacy BIOS compatibility to UEFI mode by disabling CSM, restoring platform keys, and properly re-enabling Secure Boot. Always backup your data before any firmware changes and maintain updated system software to secure your PC environment effectively.