Windows OS: Secure Boot must be enabled

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Secure Boot is a standard that ensures systems boot only to a trusted operating system. Secure Boot is required to support additional security features in Windows, including Virtualization Based Security and Credential Guard. If Secure Boot is turned off, these security features will not function.

More info: https://docs.microsoft.com/en-us/windows/security/information-protection/secure-the-windows-10-boot-process