好的，我现在需要帮用户总结一篇文章，控制在100字以内。首先，我得仔细阅读文章内容，理解主要信息。 文章讲的是微软解决了Windows 11的一个bug，导致一些商业系统在安装最近的安全更新后无法启动，出现“UNMOUNTABLE_BOOT_VOLUME”错误。这个bug影响了运行25H2和24H2版本的设备。微软在2026年2月的补丁星期二更新中发布了修复补丁KB5077181。之前的问题是由于12月的安全更新安装失败导致的，后来的更新可能会使系统无法启动。修复后，大部分问题解决了，但之前受影响的设备可能仍需手动恢复。 接下来，我需要将这些信息浓缩到100字以内。重点包括：微软解决了一个Windows 11的启动错误问题；问题出现在安装特定安全更新后；影响的是商业设备；修复补丁是在2月发布的；之前的失败安装导致系统无法启动；修复后问题解决。 然后，组织语言，确保简洁明了。避免使用复杂的术语，让总结易于理解。 最后检查字数是否符合要求，并确保所有关键点都被涵盖。 </think> 微软修复了Windows 11的一个启动错误问题，该问题导致部分商业设备在安装安全更新后无法启动并显示"UNMOUNTABLE_BOOT_VOLUME"错误。此问题由先前失败的安全更新引起，现已通过2026年2月的KB5077181安全更新完全解决。 2026-2-15 22:15:17 Author: www.bleepingcomputer.com(查看原文) 阅读量:1 收藏
Microsoft says it has resolved a Windows 11 bug that caused some commercial systems to fail to boot with an "UNMOUNTABLE_BOOT_VOLUME" error after installing recent security updates, with the fix delivered in the February 2026 Patch Tuesday update.
The boot issue, which Microsoft previously investigated and linked to failed December 2025 updates, affected a limited number of commercial Windows 11 devices running versions 25H2 and 24H2.
According to a private enterprise advisory seen by Susan Bradley of Ask Woody, the issue has now been marked as fully resolved in the Windows 11 KB5077181 security update released on February 10, 2026.
Microsoft says impacted devices suffered boot failures after installing the January 13, 2026, security update KB5074109 or later updates, displaying a black screen and the message: "Your device ran into a problem and needs a restart. You can restart."
At that point, impacted systems were unable to boot and required manual recovery to restore functionality.
Microsoft previously confirmed the issue was caused by the failed installation of the December 2025 security update, leaving devices in an improper state after the installation rolled back.
Attempting to install future Windows updates on devices with this "improper state" could cause the system to become unbootable.
Microsoft said the issue affected only physical devices running Windows 11 25H2 and 24H2, and did not receive reports of it affecting home users or virtual machines.
Fix delivered in February Patch Tuesday update
Microsoft says it previously released an initial resolution in the optional non-security preview update KB5074105 on January 29, 2026, which helped prevent additional systems from becoming affected by the bug.
The company now says the issue is fully resolved in the Windows 11 KB5077181 update released during the February 2026 Patch Tuesday and later updates.
"This issue is fully resolved in the Windows security update released on February 10, 2026 (the Resolved KBs listed above), and later updates," reads Microsoft's advisory.
Unfortunately, devices that became unbootable before the fix was released may still require additional remediation.
Microsoft advises enterprise customers whose devices remain affected to contact Microsoft Support for Business for assistance restoring system stability.
It is unclear why Microsoft did not share this advisory publicly, as it does for other known Windows issues.
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