Event details

Ask Microsoft Anything (AMA) about updating Secure Boot certificates on your Windows devices before they expire in June of 2026. We recently published the first version of the Secure Boot playbook, o...
Heather_Poulsen
Updated Dec 09, 2025
AMA
mithunlal's avatar
mithunlal
Copper Contributor
Dec 09, 2025

Does this have any relation with Defender ASR rule 'Block rebooting machine in Safe Mode'? https://learn.microsoft.com/en-us/defender-endpoint/attack-surface-reduction-rules-reference#block-rebooting-machine-in-safe-mode

prabhv1982's avatar
prabhv1982
Icon for Microsoft rankMicrosoft
Dec 09, 2025

No. This is not related to Windows Defender's feature to block boot to Safe Mode.