Overview
- Microsoft says devices updated on or after October 14, 2025 may present a BitLocker recovery screen once during restart or startup.
- Windows 11 versions 25H2 and 24H2 (KB5066835) and Windows 10 version 22H2 (KB5066791) are listed as affected builds.
- The behavior primarily impacts Intel-based systems that support Modern Standby, according to a Microsoft service alert.
- Microsoft advises IT administrators to use a Known Issue Rollback group policy for mitigation and to contact Microsoft Support for business details.
- Users who cannot access their BitLocker recovery key risk losing data, though many managed and Microsoft account–linked devices may have the key stored.