Archive. This is an archive of the Apple Support Community. Discussions are being restored and soon you will be able to read and post here again.
Majmik
User level: Level 1 (14 points)

Magic Mouse (USB-C) not responding on Mac mini after macOS 27.0.1 update

After updating my Mac mini (M4, 2024) to macOS 27.0.1, the new Magic Mouse (USB-C) that came with it shows as "Connected" in Bluetooth settings. But no pointer appears, and the mouse doesn't respond to anything: no movement, no clicks, no scrolling.


The mouse itself is fine:

- It works perfectly when paired with my MacBook Neo, which has not been updated.

- An older Magic Mouse 2 (Lightning) works normally on the same Mac mini running 27.0.1.


Technical details: The new mouse has firmware 3.1.4 and the old one has 3.1.1. In the IORegistry, the multitouch driver (AppleMultitouchMouseHIDEventDriver) loads for the new mouse, but no AppleMultitouchDevice is ever created under it. For the old mouse it is created normally. So the Mac never receives any input from the new mouse.


What I've tried:

- Forgot the mouse and re-paired it with a USB-C cable

- Restarted the Mac

- Deleted the mouse preference files and restarted Bluetooth

- Tested in a new user account (same problem)

- No third-party mouse software is installed, and no newer macOS update is available


I've also sent a bug report through apple.com/feedback.


[Edited by Moderator]

Posted on Oct 4, 2026 1:14 AM

3 replies

Majmik Author
User level: Level 1 (14 points)

Oct 27, 2026 12:47 AM in response to Majmik

Update: Fixed in macOS 27.2


After updating my Mac mini to macOS 27.2, the new Magic Mouse (USB-C) works normally again. The Mac now recognizes it correctly, without having to pair it again. So it was a bug in macOS 27.0.1 that Apple has fixed.


Thank you very much for your help, neuroanatomist and tbirdvet!

neuroanatomist
User level: Level 9 (72,871 points)

Oct 4, 2026 5:57 AM in response to Majmik

Good job with the troubleshooting! I don't see that you've tried safe mode, so that is the next step. That process performs some system cleanup and clears caches, and also disables 3rd party extensions that may cause problems.


Start up your Mac in safe mode - Apple Support


If that doesn't work, reset the bluetooth module as follows.


Reset Bluetooth Module

  • Open Terminal (Sopotlight or in Applications > Utilities)).
  • Type the command:
sudo pkill bluetoothd
  • Press Return, then type your Mac's administrator password (characters will not show on screen) and hit Return again.
  • Restart your Mac to finish the reset


From Apple (seems you've followed these and more): If you can't connect your Magic Keyboard, Magic Mouse, or Magic Trackpad to your Mac - Apple Support


As a data point, I have an M4 Pro MBP and a Magic Mouse USB-C (firmware 3.1.4) that are working normally together on macOS 27.0.1.


Originally posted at discussions.apple.com/thread/256370104