Overview
- Updates released on or after October 14, 2025 can force a BitLocker recovery prompt at startup, after which systems boot normally once the key is entered.
- Microsoft lists Windows 11 25H2 and 24H2 (KB5066835) and Windows 10 22H2 (KB5066791) as affected, with Intel devices that support Connected/Modern Standby primarily impacted.
- The advisory targets business customers and is published through Microsoft 365 Business and Windows 11 Enterprise support channels.
- A remediation is being rolled out, and organizations may need to manually deploy it across their environments.
- Users can locate recovery keys via their Microsoft account (aka.ms/myrecoverykey) or an organization’s Azure AD portal (aka.ms/aadrecoverykey), and data may be unreachable without the key.