Microsoft released out-of-band hotpatch KB5084897 to fix a Windows 11 Enterprise bug that caused connected Bluetooth devices to disappear from Settings and Quick Settings even though the devices remained operational. The issue affected Windows 11 24H2 and 25H2 systems enrolled in the hotpatch program, and it also prevented users from pairing new Bluetooth devices because available hardware did not appear in the connection list.
The update installs automatically in the background and does not require a reboot, reflecting Microsoft’s use of hotpatch delivery for eligible enterprise devices. Reporting indicates the fix is limited to hotpatch-enabled Enterprise systems rather than devices on standard cumulative updates, and Microsoft positioned it as an emergency release to quickly restore normal Bluetooth management functionality after a disruptive user-interface failure.

See real exploitation activity before you spend the cycle.
1 event from the most recent confirmed update back to the earliest known activity.
On 2026-03-16, Microsoft released out-of-band update KB5084897 to fix a Windows 11 24H2/25H2 bug that caused connected Bluetooth devices to disappear from Settings and Quick Settings. The issue also blocked discovery and pairing of new Bluetooth devices, and the hotpatch was delivered without requiring a reboot on eligible hotpatch-enabled systems.
Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.
See real exploitation activity behind this advisory so you can triage it against everything else in the queue.
3 references tracked. Mallory keeps watching after this page renders.
zdnet.fr
Open sourceghacks.net
Open sourcecybersecuritynews.com
Open sourceMap indicators from this story to your assets and identify affected systems in minutes.
Every observed campaign, victim, and pivot linked to actors named in this story.
Malware, exploits, and IOCs connected to the activity described here.
YARA, Sigma, and Snort rules deployed to your SIEM as soon as they’re published.
Get matching new stories delivered to your team as they break — not the next morning.
Ask questions about this story and take action on the answers.