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.
MUO on MSN

A major Windows security certificate expires in June — check if your PC is ready

Don't let your PC languish ...
Windows Report

Microsoft Restores Secure Boot FAQ Details Ahead of 2026 Certificate Expiration

Microsoft confirms systems without updated Secure Boot certificates will boot normally but lose some security protections.
Ars Technica

Microsoft sounds the alarm about Secure Boot certificates expiring later this year

So... my Asus mobo (ROG Strix Z390-E Gaming) is from 2018, and while the code Andrew provided for PowerShell shows I'm OK for the new cert, I get "False" for Default ...