Windows 11 Bluetooth Fix: Emergency Hotpatch KB5084897 Released

Microsoft has released an out-of-band hotpatch, KB5084897, to address a Bluetooth visibility issue affecting Windows 11 Enterprise devices enrolled in the hotpatch update program. The update, launched on March 17, 2026, installs automatically and does not require a system restart.

The Bluetooth Visibility Problem

The issue prevents connected Bluetooth devices from appearing in Windows Settings under the ‘Bluetooth & devices’ section, or in Quick Settings, even if they are functioning correctly. Affected users are also unable to add new Bluetooth devices as they do not appear in the connection list. BleepingComputer first reported on the issue and the subsequent hotpatch.

Which Windows 11 Versions are Affected?

KB5084897 is applicable to Windows 11 versions 24H2 and 25H2 on Enterprise editions with hotpatch enabled. The update will not install on Enterprise devices that are receiving standard cumulative updates. It includes all enhancements and security patches from the March 2026 Windows hotpatch release. Microsoft Support details the specifics of the update.

Second Emergency Update in a Week

This is the second out-of-band hotpatch from Microsoft for Windows 11 Enterprise in less than a week. On Friday, March 12, 2026, Microsoft released KB5084597 to address three high-severity vulnerabilities in the Windows Routing and Remote Access Service (RRAS). These vulnerabilities could allow an attacker with domain credentials to execute malicious code. Neowin covered the release of both updates.

How Hotpatch Updates Work

Hotpatch updates fix issues by applying patches directly to running processes in memory while also updating files on disk. This ensures the patches remain effective after a reboot without requiring an immediate restart. Windows Forum provides additional information on the hotpatch process.

The KB5084897 hotpatch update was released on March 17, 2026, and is now rolling out automatically to qualified devices.