If Bluetooth is not listed in Device Manager, first confirm the device actually supports Bluetooth. Microsoft’s guidance states that if Bluetooth is missing, checking the product specifications is the first step because some devices do not have Bluetooth.
If the wireless mouse previously worked over Bluetooth, try these supported steps:
- Run the Windows Bluetooth troubleshooter in the Get Help app.
- In Device Manager, check whether Bluetooth appears after a restart.
- If Bluetooth appears later in Device Manager, uninstall the Bluetooth adapter and let Windows reinstall it:
- Open Device Manager
- Expand Bluetooth
- Right-click the Bluetooth adapter
- Select Uninstall device > Uninstall
- Shut down the PC
- Turn it back on
- If Windows does not reinstall it automatically, open Device Manager and select Action > Scan for hardware changes
- If the driver issue continues, download and install the latest Bluetooth driver from the PC manufacturer’s support website, then restart the PC.
- If Bluetooth can be turned on but the mouse still does not work, remove the Bluetooth device and pair it again in Settings > Bluetooth and devices > Devices.
For Windows 10, Microsoft also notes that support ended on October 14, 2025.