Important security certificates for Windows 11 will soon expire for many users. In some cases, you will need to take action to prevent this from happening. Here's what you need to do and why.

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

Make sure you've updated before the deadline.

Windows 10 and Windows 11 rely on three security certificates that begin expiring from June 2026, with additional expirations later in 2026. Microsoft is treating this as a broad, ecosystem-level ...

I've been reviewing hardware and software, devising testing methodology and handed out buying advice for what seems like forever; I'm currently absorbed by computers and gaming hardware, but ...

Microsoft will begin delivering new Secure Boot certificates via Windows Update in March 2026. The update targets millions of PCs before the original 2011 certificates begin expiring in June. The move ...

Microsoft will use standard Windows 11 updates to keep Secure Boot working on existing PCs as the operating system's original certificates near their end. The company says Secure Boot certificates ...

In brief: Secure Boot was originally introduced with Windows 8 as a firmware-based security feature designed to protect the OS from potentially malicious boot code. After more than 15 years, the ...

Microsoft introduced Secure Boot back in 2011, and made it a key requirement for installation of Windows 11. And now some users will have to update their certificates ...

Microsoft said it has begun rolling out new Secure Boot security certificates, ahead of a late June 2026 expiration deadline that affects virtually every Windows device globally. The certificates, ...

Microsoft says Secure Boot certificates are being updates, and Windows 10 isn't fully eligible Affected devices will enter a "degraded security state" Is this another push to drive Windows 11 adoption ...