Overview
- Updates released on or after October 14, 2025 can cause a BitLocker recovery prompt during restart, after which normal boot resumes once the key is entered.
- The issue affects Windows 11 versions 25H2 and 24H2 and Windows 10 version 22H2, with Intel devices that support Modern Standby primarily impacted.
- Microsoft is distributing a remedy and says IT administrators can mitigate the problem via a Known Issue Rollback group policy, with support available through Microsoft Support for business.
- Users who cannot supply the BitLocker recovery key risk losing access to their data, though keys are often backed up to the owner’s Microsoft account.
- The advisory was initially visible only to Microsoft 365 Business and Windows Enterprise customers, and follows similar BitLocker recovery incidents tied to past updates.