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It's time for our second Ask Microsoft Anything (AMA) about updating Secure Boot certificates on your Windows devices before they expire in June of 2026. If you've already bookmarked Secure Boot play...
Heather_Poulsen
Updated Feb 12, 2026
HeyHey16K
Feb 05, 2026Steel Contributor
mihi
Feb 05, 2026Copper Contributor
Posting the link from the footnote (windowsforum) would have been more useful than a screenshot of Copilot, as it would allow to see the original discussion and what actually was talked there. And do not forget that copilot can be wrong and often is when you use terms that are not official (like Secure Boot Strict Mode - There is Setup Mode and User Mode, but no Strict Mode in Secure Boot specification. Some UEFI also have "Custom mode" vs. "Vendor mode" which refers whether to use platform keys from the UEFI vendor or your own ones. But no Strict Mode).