In the latest release notes, a series of enhancements and bug fixes have been unveiled, addressing not only security vulnerabilities but also improving overall system functionality.
Key Improvements and Fixes
Among the notable updates is a resolution to an issue affecting the Backup feature. Users previously encountered an “invalid credentials” error when attempting to perform automatic backups to network shares via Server Message Block (SMB). This glitch resulted in scheduled backups failing to copy any files. The recent update effectively resolves this problem, ensuring that users can now rely on their backup processes without interruption.
Additionally, the update enhances the Secure Boot feature. It introduces high-confidence device targeting data, which broadens the range of devices eligible to automatically receive new Secure Boot certificates. Over the coming months, certificate deployment will continue through Windows updates, benefiting both supported PCs and non-managed business devices.
This update also plays a crucial role in addressing the persistent challenge of outdated Secure Boot certificates, a concern impacting users of both Windows 11 and Windows 10. The total download size for this update is just under 1 GB, making it a substantial yet manageable download for users.
It is important to note that the update, identified as KB5120249, will only be available to PCs enrolled in the Extended Security Updates (ESU) program. This program guarantees that Windows 10 PCs will continue to receive essential security updates until at least October 2027. For those who have not yet enrolled in the ESU, it is advisable to do so, as Windows 10 PCs lost security update support back in October 2025 without this enrollment.
