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Microsoft Investigates BitLocker Bug in Latest Windows Update

Users encounter unexpected recovery screens after installing July's security patch on Windows 10 and 11 systems.

Overview

  • The bug affects multiple versions of Windows 10 and 11, prompting BitLocker recovery screens on boot.
  • Microsoft's update health dashboard provides guidance on entering a BitLocker recovery key to resolve the issue.
  • The problem is more likely to occur on systems with both Device Encryption and BitLocker enabled.
  • Microsoft is actively investigating the bug and working on a permanent fix.
  • The issue follows a major CrowdStrike outage that impacted millions of Windows PCs globally.