Windows 10 KB5078885 ESU out with Secure Boot 2023, replacing expiring Secure Boot certificates from 2011. But it's a staged roll out.
Don't let your PC languish ...
Microsoft confirms systems without updated Secure Boot certificates will boot normally but lose some security protections.
XDA Developers on MSN
Microsoft's Secure Boot certificates expire in June 2026, but older PCs may never get the fix
Make sure you've updated before the deadline.
Microsoft has addressed a security vulnerability that can lead to BitLocker Secure Boot bypass on both Windows 10 and 11. Alongside that, the company has also detailed how to resize the WinRE space.
In June 2025, Microsoft announced that, in June 2026, it would begin deprecating Secure Boot certificates of Windows systems ...
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