· · Dev.to
Microsoft UEFI CA Expiry: Essential Checks for Secure Boot Users
The Microsoft UEFI CA 2011 quietly expired on June 27, 2026. If you're running anything with Secure Boot enabled, this is worth five minutes of your time. Third-party binaries that were signed only by that CA — things like option ROMs, older third-party bootloaders, or hardware firmware blobs — can
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