Bluetooth is built into Windows 11, so you usually don’t need to install anything. Turn it on in Settings > Bluetooth & devices, or with the Bluetooth button in Quick Settings (Win + A). If there’s no Bluetooth option at all, your PC either lacks Bluetooth hardware, which a small USB Bluetooth adapter fixes, or it needs its Bluetooth driver installed from the PC maker.
Quick Answer
Settings > Bluetooth & devices > turn Bluetooth on > Add device. Missing? Install the Bluetooth driver from your PC maker, or plug in a USB Bluetooth adapter.
Turn On Bluetooth in Windows 11
- Press Win + I to open Settings.
- Click Bluetooth & devices.
- Turn the Bluetooth switch on.
- Click Add device > Bluetooth, put your headphones, mouse, or speaker in pairing mode, and select it from the list.
You can also press Win + A and click the Bluetooth button in Quick Settings. Right-click it and choose Go to Settings to pair new devices.
Check Whether Your PC Has Bluetooth
- Right-click Start and open Device Manager.
- Look for a Bluetooth category.
- If it’s there, Bluetooth hardware exists. If there’s a yellow warning icon, the driver needs to be installed or updated.
- If there’s no Bluetooth category and nothing unknown under Other devices, the PC probably has no Bluetooth. Many desktops don’t.
Install or Reinstall the Bluetooth Driver
- Go to your PC or motherboard maker’s support site and enter your model or serial number.
- Download the Bluetooth driver for Windows 11 (often packaged with the Wi-Fi driver).
- Run the installer and restart.
Also check Settings > Windows Update > Advanced options > Optional updates for a Bluetooth driver. For more options, see how to update drivers in Windows 11.
Add Bluetooth With a USB Adapter
If your PC has no Bluetooth, a USB Bluetooth adapter is the easiest fix. Plug it in; Windows 11 installs a driver for most adapters automatically. Then turn on Bluetooth in Settings. Choose a Bluetooth 5.0 or newer adapter for better range and audio.
Which Fix Do You Need?
| What you see | Fix |
|---|---|
| Bluetooth switch is off | Turn it on in Settings or Quick Settings |
| Switch is missing, device shows in Device Manager with a warning | Install the maker’s Bluetooth driver |
| Bluetooth device is disabled in Device Manager | Right-click it > Enable device |
| No Bluetooth in Device Manager at all | Add a USB Bluetooth adapter |
| Bluetooth disappears after sleep | Device Manager > adapter > Power Management > uncheck power saving |
If headphone audio suddenly sounds muffled, see how to disable Hands-Free audio in Windows 11.
Troubleshooting
- Bluetooth toggle vanished: Do a full shutdown: hold Shift while you select Start > Power > Shut down, wait a minute, and turn the PC back on. This resets the hardware, which a normal restart may not.
- Airplane mode is on: Turn it off in Quick Settings; it disables Bluetooth.
- Bluetooth Support Service is stopped: Press Win + R, type services.msc, and set Bluetooth Support Service to Automatic, then start it.
- Run the troubleshooter: Settings > System > Troubleshoot > Other troubleshooters > Bluetooth (or the Get Help app).
- Audio sounds poor on a headset: Using the headset’s microphone switches to a lower-quality mode; see our sound setup guide for output settings.
Frequently Asked Questions
Do I need to download Bluetooth for Windows 11?
No. Bluetooth support is part of Windows 11. You only need a driver for your specific hardware, which Windows or the PC maker provides.
How do I know which Bluetooth version I have?
In Device Manager, open the Bluetooth adapter’s Properties > Advanced tab and read the LMP (Link Manager Protocol) version.
Can I add Bluetooth to a desktop PC?
Yes. Use a USB adapter or a Wi-Fi and Bluetooth card installed inside the PC.
Summary
- Open Settings > Bluetooth & devices and turn Bluetooth on.
- Use Add device to pair accessories.
- Install the maker’s driver if the switch is missing.
- Add a USB adapter if the PC has no Bluetooth.
Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.