Windows 11 systems must have Unified Extensible Firmware Interface (UEFI) firmware and be configured to run in UEFI mode, not Legacy BIOS.
An XCCDF Rule
Description
UEFI provides additional security features in comparison to legacy BIOS firmware, including Secure Boot. UEFI is required to support additional security features in Windows 11, including virtualization-based Security and Credential Guard. Systems with UEFI that are operating in Legacy BIOS mode will not support these security features.
- ID
- SV-253256r971547_rule
- Version
- WN11-00-000015
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Configure UEFI firmware to run in UEFI mode, not Legacy BIOS mode.