Are you still using Windows 10? Microsoft automatically replaces Secure Boot certificates on old PCs before they expire. So you may want to update as soon as possible

• Microsoft says Secure Boot certificates are being updated and Windows 10 is not fully eligible
• Affected devices will enter a “degraded security state”
• Is this a new push to drive adoption of Windows 11?

Microsoft is rolling out updated Secure Boot certificates because previous certificates will expire after 15 years of service, which could be bad news if you’re still using Windows 10.

The company described the update, which is expected to affect millions of devices, as “one of the largest coordinated security maintenance efforts in the Windows ecosystem.”