Microsoft has confirmed that Secure Boot certificate updates are failing or being blocked on some Windows 11 PCs.

A crucial Windows security certificate just expired - how to check your PC ...

You’ve probably seen countless warnings lately about Windows and expiring Secure Boot certificates. Why? Some PCs haven’t gotten the updates yet—and won’t unless you take action. That’s the first ...

Secure Boot Certificate update is failing on some Windows 11 computers and users see a message. This post explains why and ...

The Secure Boot Certificates will expire in June 2026. That’s why it is mandatory to get the latest Secure Boot Certificates update. Ignoring this update may lead to severe consequences, as it will ...

Certain older devices that cannot receive updates via their OEM may not be able to install the latest Secure Boot certificate ...