Microsoft warns Windows 11 PCs without the new Secure Boot certificates may lose future protections, boot security updates, ...

Microsoft says the new SecureBoot folder created by Windows 11 KB5089549 is expected and tied to Secure Boot certificate updates.

Microsoft has officially confirmed that the Windows 11 May 2026 cumulative update KB5089549 triggered installation failures and infinite reboot loops on some systems due to insufficient space in the ...