Windows 10 is getting a new and important update... Download it to address critical security vulnerabilities.
Microsoft has released a new update for Windows 10 that addresses several vulnerabilities, including two critical security flaws. Just a week after releasing a patch for a critical issue dating back to late 2025, the tech giant is back with another update. If you're enrolled in the Extended Updates program, you can download it now via Windows Update.
According to the update notes, update KB5078885 addresses a persistent bug related to logout and hibernation. Many computers equipped with Safe Boot and Virtual Security Mode (VSM) were experiencing unexpected restarts when attempting to shut down the system. This bug had existed since the January 2026 updates, and Microsoft had already promised a fix.
Regarding file management and the user interface, the update fixes a bug in File Explorer that affected folder renaming using desktop.ini files. Previously, the system ignored the LocalizedResourceName parameter, preventing custom folder names from displaying correctly. Additionally, improvements have been made to the File History in the Control Panel, allowing users to copy documents whose names contain special characters in Standard Chinese and private use areas.
Minor graphics modifications have also been made. System fonts have been updated to conform to international standards, and some GPU configurations have been improved for greater stability. Finally, the Windows Image Manager now includes a warning dialog box designed to prompt administrators to verify the source of index files, adding a layer of manual verification against untrusted sources.
In addition to software fixes, Microsoft is using this update to complete the transition to Secure Boot certificates. Certificates issued in 2011 are set to expire in June 2026, requiring the company to implement a phased rollout. If these components are not updated before the deadline, third-party bootloaders and other essential startup items could become invalid, potentially allowing attackers to bypass system security.
This update introduces Secure Boot Management, a diagnostic-based hashing system. Microsoft has implemented a highly reliable telemetry system to automatically identify devices eligible to receive the new certificates. This update is being rolled out in phases; devices must demonstrate successful updates before being granted the new certificate.
Microsoft hasn't reported any additional issues with this update, so you shouldn't experience anything unusual after installing it. To download it, you must be enrolled in the Extended Updates program, which began in October 2025. After enrolling, go to Settings > Windows Update and download it.
This latest update is part of Windows Tuesday's updates and focuses exclusively on fixing security vulnerabilities and other critical issues that have surfaced in recent months. Since Windows 10 is in the final stages of support, don't expect any new features this year. Microsoft has focused entirely on Windows 11, so feature updates are limited to that system.