macOS Bluetooth Keyboard Not Working — What It Means & How to Fix It

What Does This Error Mean?

A Bluetooth keyboard that stops working on Mac is usually caused by a drained battery, a pairing issue, or a Bluetooth system glitch. This is one of the most common Mac frustrations and almost always fixable without any tools or professional help. Start with the battery and pairing — these fix the problem 90% of the time.

Affected Models

MacBook Air (all models)
MacBook Pro (all models)
iMac (all models)
Mac mini (all models)
Magic Keyboard (all versions)

Common Causes

Apple Magic Keyboard battery is dead or critically low
Bluetooth pairing has become corrupted and needs to be removed and re-established
Mac Bluetooth module has encountered a software glitch and needs a restart
Interference from other Bluetooth devices, Wi-Fi equipment, or USB 3.0 devices nearby
macOS update changed Bluetooth settings or introduced a compatibility issue

How to Fix It

Check the keyboard battery first. For the Apple Magic Keyboard with Lightning charging port, plug it into a Lightning cable for at least 15 minutes. For the older AA battery version, replace the batteries.

The Magic Keyboard's battery indicator is in System Preferences > Bluetooth. Below 20% it may disconnect intermittently.
Turn the keyboard off and back on. There is a power switch on the side or back of the keyboard. Slide it off (green disappears), wait 5 seconds, then slide it back on (green shows).

Cycling the keyboard power forces it to broadcast a fresh pairing signal.
On your Mac, go to System Preferences (or System Settings) > Bluetooth. Find the keyboard in the list and click the X to remove it. Then with the keyboard powered on, click 'Connect' or pair it again from scratch.

Removing and repairing clears any corrupted pairing data that prevents the keyboard from connecting.
Toggle Bluetooth off and on on your Mac. Click the Bluetooth icon in the menu bar > Turn Bluetooth Off. Wait 5 seconds, then turn it back on. The keyboard should reconnect automatically.

This restarts the Bluetooth subsystem without requiring a full Mac restart.
If none of the above work, restart your Mac while the keyboard is powered on. After the restart, the Mac should automatically reconnect to paired Bluetooth devices.

If the keyboard still does not connect after a restart, try using a USB keyboard temporarily to navigate the Bluetooth settings and re-pair the wireless keyboard.

When to Call a Professional

Bluetooth keyboard issues are almost always self-fixable. If the keyboard hardware itself is damaged or the Mac's Bluetooth antenna is faulty, an Apple Store or Genius Bar appointment would be needed. Apple Support is available at support.apple.com.

Frequently Asked Questions

My Magic Keyboard was working fine and suddenly stopped — why?

The most common sudden stops are caused by the battery dying, a momentary Bluetooth conflict, or the Mac going into a deep sleep state that drops Bluetooth connections. Charge or replace the battery first, then toggle Bluetooth off and on. These two steps resolve the majority of sudden disconnections.

Can a USB 3.0 device interfere with my Bluetooth keyboard?

Yes. USB 3.0 devices emit electromagnetic interference in the 2.4 GHz frequency range — the same band used by Bluetooth. Plugging a USB 3.0 device into a port very close to where your keyboard's signal is received can cause disconnections. Try moving USB 3.0 devices to ports on the back or using a USB hub with shielded cable.

My Mac does not see the keyboard in the Bluetooth list at all — what do I do?

Make sure the keyboard is powered on and in pairing mode. For an Apple Magic Keyboard, slide the power switch off, wait 3 seconds, then slide it back on. The keyboard should now appear in the Bluetooth device list within 30 seconds. If it still does not appear, move the keyboard within 3 feet of your Mac.