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Your Windows PC might stop booting in June 2026 — here’s why and how to fix it

Ensure your PC boots safely before Secure Boot changes.

Windows’ original Secure Boot certificates expire in June—here’s what you need to do

One of those was UEFI Secure Boot, a mechanism for verifying PC bootloaders to ensure that unverified software can’t be loaded at startup. Secure Boot was enabled but technically optional for Windows ...
SecurityWeek

Microsoft to Refresh Windows Secure Boot Certificates in June 2026

Microsoft will roll out new Secure Boot certificates for Windows users starting June, as the old certificates will expire.

Older Windows 11 PCs need a Secure Boot fix ASAP

Microsoft has recently begun replacing expiring Secure Boot certificates on eligible Windows 11 systems running 24H2 and 25H2 ...
WinBuzzer

Microsoft Refreshes Secure Boot Certificates via Windows Update

Microsoft has announced it will deliver new Secure Boot certificates via Windows Update starting March 2026 before 2011 ...

Windows Secure Boot certificates are expiring after more than 15 years

Microsoft is reminding users that the Secure Boot ecosystem will soon require a mandatory check-up. The Redmond-backed security protocol, part of the UEFI specification and primarily ...

Windows Secure Boot certificates expire in June, Microsoft warns

Secure Boot operates before Windows loads, blocking untrusted code from executing during startup. The trust mechanism relies on certificates stored in device firmware; Microsoft s ...