Windows 11 25H2 and 24H2 October Update Triggers BitLocker Recovery
Microsoft has run into a new problem, predominantly affecting Intel-based PCs. Users on Windows 11 versions 25H2 and 24H2, as well as some running Windows 10, may unexpectedly enter BitLocker recovery mode.
Normally, BitLocker only asks for the recovery key after system configuration changes. However, a new bug causes recovery prompts without any actual system modifications.
About BitLocker Encryption
BitLocker secures the entire drive volume using AES encryption by default. This protection keeps data safe if the drive is stolen, lost, or improperly decommissioned.
Microsoft's Official Note
"After installing Windows Updates released on or after October 14, 2025 (the Originating KBs listed above), some devices might encounter issues during restart or startup."
Affected Updates and Versions
- Windows 11 25H2 with KB5066835
- Windows 11 24H2 with KB5066835
These findings are based on information from a restricted portal shared by Windows Latest, confirming the scope of the problem.
Summary
This issue causes BitLocker to ask for recovery keys unexpectedly on certain Windows 11 Intel-based systems after recent October 2025 updates.
Author's summary: A new Windows 11 October update mistakenly triggers BitLocker recovery on Intel PCs, causing unexpected recovery prompts despite no system changes.