Bluetooth disappeared (Windows 11)

Anonymous
2021-12-16T02:29:27+00:00

Update: Resolved issue by disconnecting PC from power (unplugging from wall) for 10 minutes and then restarting. Baffling.

Bluetooth services disappeared several weeks ago and I've been trying to get it back. Here's what I've found so far:

  • Bluetooth troubleshooter couldn't solve it
  • Restarting Bluetooth Services - I have done this, and have set all to start automatically however BluetoothUserService_5aacd will not allow me to move it from Manual to Automatic, I get a "The parameter is incorrect" error
  • I uninstalled and reinstalled the BT drivers, which did not fix the issue
  • I have uninstalled Intel(R) Wireless Bluetooth(R) within Device Manager, and restarted computer, which reinstalled the Intel BT but did not fix the issue (note: my Device Manager is constantly refreshing/ flashing, unsure if related)

Thank you in advance for your help!

EDIT: I was able to update BluetoothUserSErvice to start automatically at start up, correcting the "parameter is incorrect error". This did not resolve my bluetooth problem.

Windows for home | Windows 11 | Devices and drivers

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Anonymous
2022-01-08T22:04:00+00:00

Hi ADP,

Sharing my experience with the hope that it helps others resolve their bluetooth issue as well. My bluetooth had disappeared suddenly without any cause or reason and it did not come back by reinstalling the device drivers, or resetting the bluetooth services, or by trying a lot of other solutions. Bluetooth had disappeared from Device Manager and replaced with a mystery USB device. Nothing seemed to bring it back.

Eventually what worked is to shut down the laptop completely and disconnect the power cable and kept it shut for about 10 minutes before starting it up again. (make sure it is fully shut down and not sleep and not restarted)

Laptop : Asus zendesk with Windows 11 Pro 21H2 (updated to the latest fixes). Uses Intel Wireless Bluetooth drivers.

The solution is based on the following thread with similar issues for Windows 10. https://answers.microsoft.com/en-us/windows/forum/all/bluetooth-capability-not-detected-windows-10/0db9ce62-eba9-4b85-9e5c-15336f41bfe3?page=2

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  2. Anonymous
    2022-02-03T11:38:50+00:00

    I've just had this problem....twice now!! Essentially, with no warning or error, a perfectly working Bluetooth setup suddenly disappears the follow time the PC is booted up. Both occasions appear to occur after a WIndows Update.

    My system is a fairly new Dell Inspiron 3881 (10th Gen) i7 Desktop, running Windows 11.

    The 1st time this happened was after the Windows 10 > 11 upgrade via Windows Update. After the reboot..no Bluetooth. I checked the available Network Connections spotted the Bluetooth Network Connection as "Not enabled", I noticed the Device Manager had no Bluetooth hardware listed. So I simply re-download the Qualcomm Bluetooth adapter driver from the Dell website and all capability returned after a reboot.

    The 2nd time was a little more involved. A "cumulative update" was installed yesterday via Windows Update, no reboot required and no effect on Bluetooth Capabilities. But this morning, booted up PC, no Bluetooth:

    • After trying a few things suggested in this thread nothing worked.
    • Checking Network connection revealed no Bluetooth connection this time (disabled or otherwise).
    • Device Manager also showed no Bluetooth hardware. I did notice a faulty USB device down in the USB list (listed as unknown as description request failed, so no Hardware ID or any means to identify what this is). I did note the location though. Status of "disabled as Windows has found a problem with this device".
    • Device Manager showed Bluetooth hardware after unhiding. All listed Bluetooth devices were all "grayed" (this includes all the (Bluetooth) connected devices). I located the actual Bluetooth Adapter and looked up its properties; Status of "This device is not connected to this computer". I also noticed the Device Location as exactly the same as the Faulty USB device.
    • So uninstalled the Bluetooth Adapter and the faulty USB device and rebooted.
    • Bluetooth Capability Restored!!

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  3. Anonymous
    2022-02-02T23:56:52+00:00

    Yes! It worked perfect!!! In my case, Asus VivoBook X512DK, Windows 11. Spanish: Este post es la solución cuando el Bluetooth desaparece en un equipo portátil con Windows 11 o después de actualizar desde Windows 10.

    Thanks a lot!!!!

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  4. Anonymous
    2022-01-18T08:25:20+00:00

    I fixed it today, you go to "device manager", then click show hidden device in tab View, it will show Bluetooth. Then you click on your Bluetooth driver and then you choose "...shut down MMC" (1st line) then restart you PC.

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