Your PC's trust in Windows has an expiration date

PCWorld reports that Windows 11 PCs face a critical Secure Boot certificate expiration in June 2026 that could compromise system security. Current certificates from 2011 will stop receiving boot-critical updates and malware blacklists, potentially causing boot failures or blocking future Windows feature updates. Microsoft is rolling out new certificates to prevent these issues, making timely updates essential for maintaining PC security and functionality. Microsoft has clarified what will happen to Windows 11 PCs if Secure Boot certificates are not updated before they expire in June 2026. Secure Boot is a security standard developed by the PC industry.