Microsoft has issued an pressing advisory for Home windows customers, highlighting a possible glitch that might power sure units into the BitLocker restoration display after putting in safety updates launched on or after October 14, 2025.
The corporate is actively investigating the issue, which impacts choose shopper variations of Home windows and primarily impacts Intel-based techniques supporting Linked Standby. This power-saving characteristic retains units networked throughout low-energy states.
Whereas the difficulty doesn’t compromise knowledge safety, it might disrupt person workflows by requiring a one-time entry of the BitLocker restoration key upon restart.
In accordance with Microsoft’s Home windows launch well being documentation, affected customers might encounter the restoration immediate throughout boot-up or restarts following the updates.
As soon as the hot button is supplied, the gadget ought to resume regular operation with out additional interruptions. This rollback to restoration mode stems from interactions between the updates and BitLocker’s encryption mechanisms, although Microsoft has not detailed the precise root trigger but.
The advisory emphasizes that no server editions are impacted, limiting the scope to client and enterprise shopper environments.
Affected Variations and Replace Particulars
The problem targets three key shopper platforms: Home windows 11 model 25H2 and 24H2, each tied to originating information base article KB5066835, and Home windows 10 model 22H2 underneath KB5066791.
Customers can reference Microsoft’s concern trackers akin to WI1183025 for Home windows 11 25H2, WI1183026 for 24H2, and WI1183027 for Home windows 10 22H2 through the Home windows Launch Well being portal for the newest standing.
Affected PlatformMessage IDOriginating KBWindows 11, model 25H2WI1183025KB5066835Windows 11, model 24H2WI1183026KB5066835Windows 10, model 22H2WI1183027KB5066791
These updates, rolled out to patch important vulnerabilities and improve system stability, inadvertently triggered the BitLocker conduct on suitable {hardware}.
Intel processors with Linked Standby help seem most susceptible, because the characteristic’s community persistence might battle with post-update boot processes.
Microsoft recommends that affected organizations apply a Recognized Situation Rollback (KIR) to sidestep the issue. This mitigation software, detailed within the firm’s IT Professional weblog, requires contacting Microsoft Assist for Enterprise to deploy organization-wide.
Particular person customers ought to guarantee they’ve their BitLocker restoration keys useful usually saved in Microsoft accounts or printed throughout setup—to keep away from prolonged downtime.
Within the interim, Microsoft urges warning earlier than making use of the October updates on impacted units, suggesting a pause for non-urgent techniques.
The corporate guarantees updates because the investigation progresses, with a give attention to a everlasting repair in future patches. Cybersecurity consultants advise proactively backing up restoration keys, particularly for enterprise fleets that depend on BitLocker for compliance.
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