Subject: Critical Bluetooth HID malfunction after KB5065436 update (Windows 11 24H2)
After installing cumulative update KB5065436 on October 31, 2025, my Bluetooth HID devices stopped functioning correctly. Specifically, my external Bluetooth adapter (USB dongle), which had been working flawlessly before the update, now fails to maintain stable connections with HID-class devices such as gamepads and keyboards.
The issue occurred immediately after the update was applied. I did not change any drivers, services, or hardware. Prior to the update, all devices connected and operated normally. After the update, HID devices either fail to pair, disconnect randomly, or are not recognized at all.
Troubleshooting steps I have already tried:
- Attempted to uninstall KB5065436 via command line (wusa /uninstall /kb:5065436) — not permitted
- Disabled Bluetooth power-saving options — no effect
- Removed and re-paired Bluetooth devices — no effect
- Reinstalled Bluetooth drivers — no effect
- Restarted Bluetooth Support Service — no effect
- Ran Bluetooth troubleshooter — no issues detected
- No system restore point available
This issue affects external Bluetooth adapters, not just integrated ones, and seems to be directly tied to changes introduced in KB5065436. It severely impacts usability of HID peripherals, especially for gaming and accessibility.
Please investigate and confirm whether KB5065436 introduced regressions in the Bluetooth HID stack. A rollback (KIR) or hotfix would be greatly appreciated. I am currently forced to use USB connections as a workaround.
Thank you for your attention.