Bluetooth Not Working or Won't Pair on Windows 11

Category: Windows 11 · Audience: Customers & Technicians · Est. time: 10–20 min

Summary

Bluetooth devices (mice, keyboards, headsets) that won't pair or keep dropping are usually fixed by re‑pairing or a driver refresh.

Symptoms

• Bluetooth toggle is missing from Settings
• Device won't pair or shows "Couldn't connect"
• Audio/headset keeps disconnecting

Solution

1. Confirm Bluetooth is on. Settings → Bluetooth & devices → ensure Bluetooth is On. If the toggle is missing entirely, jump to step 5.
2. Put the device in pairing mode. Most devices need a button held until the light flashes. Check the device manual — pairing usually times out after ~2 minutes.
3. Remove and re‑pair. Settings → Bluetooth & devices → Devices → find the device → ⋯ → Remove device, then Add device → Bluetooth and pair fresh.
4. Check the battery. Low battery in a mouse/headset causes drop‑outs that look like a Windows fault. Charge or replace batteries.
5. Restart the Bluetooth service (Technician). Search Services → Bluetooth Support Service → right‑click → Restart (set Startup type to Automatic).
6. Run the troubleshooter. Settings → System → Troubleshoot → Other troubleshooters → Bluetooth → Run.
7. Refresh the driver (Technician). Device Manager → Bluetooth → right‑click the adapter → Update driver. If still broken, Uninstall device and reboot to let Windows reinstall it.

If that doesn't work

• Move the device closer and away from Wi‑Fi routers/USB‑3 hubs, which cause 2.4 GHz interference.
• Test the device on a phone/another PC to confirm it's not faulty.
• On desktops, a cheap USB Bluetooth dongle is a reliable fix if the built‑in adapter is failing.
• Escalate to BBN Support with the device make/model.

Prevention

• Keep only the devices you use paired — a long list can cause conflicts.