When trying to connect a Bluetooth device to a computer, all devices may appear as unknown. Have you encountered the same problem? How to resolve unknown Bluetooth device errors on Windows 11/10? In this article, MiniTool will introduce possible reasons and effective solutions.

Unknown Bluetooth device error

Windows 11/10 allows you to connect Bluetooth devices to your computer, such as Bluetooth keyboards, mouses, speakers, headphones, etc. To do this, make sure to enable Bluetooth and then add your device, which Windows will automatically search for to complete the pairing. However, unknown Bluetooth device errors will prevent you from establishing a connection.

This means that the system cannot recognize the connected device. This can occur if the device does not transmit enough identification information or the device itself fails, or if there is a problem with the Bluetooth driver or service.

If you are facing this unknown error, let's discuss how to fix it.

Basic inspection

Before you start troubleshooting, do some basic checks as follows:

1. Turn off Bluetooth functionality on your PC and Bluetooth devices, and then turn it on again to see if there is an abnormality.
2. Check for interference from other wireless devices.
3. Make sure your Bluetooth device has enough battery power. If the battery runs out, replace the battery.
4. Try connecting the Bluetooth device to another computer and checking that it is working properly.
5. Unpair with unknown devices, forget the device, and repair.

Solution 1: Run two troubleshooting tools

Windows 11/10 comes with many troubleshooting tools that can solve various problems on your computer. To fix unknown Bluetooth device errors, we recommend running the Bluetooth troubleshooter.

Step 1: Press the Start button and click Settings .

Step 2: In Windows 10, go to Update & Security > Troubleshooting > Other Troubleshooting . Find Bluetooth and click Run Troubleshooter .

In Windows 11, go to System > Troubleshooting > Other Troubleshooting , find Bluetooth , and then click the Run button.

Solution 2: Uninstall and reinstall or update the Bluetooth driver

Sometimes uninstalling and reinstalling the damaged Bluetooth driver works when Windows shows Bluetooth is unknown.

The following are the specific operation steps:

Step 1: Press the Win X key and select Device Manager to open this tool.

Step 2: Expand Bluetooth , right-click on your device, and select Uninstall Device .

Step 3: Restart the system and it will automatically reinstall the driver.

Alternatively, if your Bluetooth driver is an older version, you can right-click on the Bluetooth device and select Update Driver to update the Bluetooth driver. This should fix unknown errors. If not, please proceed to the next step.

Solution 3: Restart Bluetooth support service

Bluetooth Support Service is a key service in Windows because it enables Bluetooth functionality on your computer. If the service is stopped, Windows cannot detect the connected Bluetooth device, resulting in pairing failure. To resolve unknown Bluetooth device errors, make sure to enable this service.

Step 1: Enter services.msc in Windows Search and press Enter to open the service .

Step 2: Find the Bluetooth Support Service , right-click it, and if the service has stopped, select Start . If the service is running, select Restart .

Step 3: Open its Properties window by right-clicking on the service and selecting Properties . Then, select Automatic in the Startup Type field.

Step 4: Click Apply > OK .

Solution 4: Install Windows Update

If Bluetooth still shows all devices as unknown after trying all the solutions, then your computer may be missing some important updates. Therefore, make sure the system remains up to date.

Before installing Windows updates, please use the backup software MiniTool ShadowMaker to back up your computer, as data loss or system crashes during the update process. Please install the software and start the backup.

Then, go to Settings and access the Windows Update page. Next, check for available updates and install them on the machine.

Summarize

If Windows shows Bluetooth as unknown, don't panic. This article introduces four useful ways to resolve unknown Bluetooth device errors. Try these methods one by one to solve your problem so that you can use Bluetooth devices on your computer smoothly.

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