Windows users who use BitLocker to encrypt their data either willingly or unknowingly may have run into a BitLocker related issue several times in the past.
It is unclear when it all started, but the essence of the bug was always the same: affected Windows PCs would boot into BitLocker Recovery Mode after installation of an update that caused the issue.
The problem here is that to get out of the mode, users needed the recovery key, which many probably did not really know. While it is easy to look it up online, at least when a user uses a Microsoft account to sign in, it still was a hassle in the best case.
Microsoft confirmed another BitLocker Recovery issue on the Microsoft 365 admin center, but not yet as a known issue for regular users who do not have access to the admin portal.
The issue affects the following Windows versions:
- Windows 10, version 22H2
- Windows 11, version 24H2
- Windows 11, version 25H2
The systems are affected, if the October 2025 security updates are installed on the machines.
Microsoft says that the issue affects Windows PCs with Intel processors and Modern Standby mostly. Still, other systems may also be affected.
As usually, Windows users may resolve the issue by entering the BitLocker recovery key when prompted for it.
Closing Words
Microsoft seems to have a hard time fixing the BitLocker bug for good, as it reappeared several times, including in May of 2025 when Microsoft issued another warning about the problem.