"Microsoft has started automatically replacing expiring Secure Boot certificates on eligible Windows 11 24H2 and 25H2 systems.

Secure Boot is a security feature that blocks malicious software (like rootkit malware) from executing during the system startup sequence by ensuring that only trusted bootloaders can load on computers with UEFI firmware. This is done by checking the software's digital signature against a set of trusted digital certificates that are stored in the device's firmware."

tech

"Microsoft has started automatically replacing expiring Secure Boot certificates on eligible Windows 11 24H2 and 25H2 systems.

Secure Boot is a security feature that blocks malicious software (like rootkit malware) from executing during the system startup sequence by ensuring that only trusted bootloaders can load on computers with UEFI firmware. This is done by checking the software's digital signature against a set of trusted digital certificates that are stored in the device's firmware."