Magic Mouse: Lost Connection - These Tips Will Help You ...

Solve connection problems with the Magic Mouse

I am really a fan of the Magic Mouse and have still been using the first model for ages, as I've only bought MacBook Pros for the past few years and you don't get a mouse delivered with it. The Magic Mouse has been my loyal companion for over 10 years when I work at home.

I like the flat shape and above all the possibility of not only being able to scroll up and down on the touch-sensitive surface, but also to scroll left and right or to make the zoom and pinch gestures. This is something that no other mouse offers.

The good old Magic Mouse has been through a lot for me, but is still my favorite mouse (Photos: Sir Apfelot).

The good old Magic Mouse has been through a lot for me, but is still my favorite mouse (Photos: Sir Apfelot).

Standard protocol: check everything and restart

Before properly starting troubleshooting, make sure you've tried the obvious:

  • Switch the mouse off and on
  • Turn Bluetooth off and on
  • Turn your Mac off and on
  • Replace the batteries in the mouse

Most mistakes can still be made get rid of the world by restarting.

Lost connection - when the mouse no longer wants to ...

The batteries in the Magic Mouse 1 usually last for several weeks, but sometimes they surprise me with the message "Connection lost" - and not infrequently if I have only been using the batteries for a few days.

The Magic Mouse 2 - with built-in battery and Lightning charging port - can drive the user crazy with this message, because sometimes the status of the Apple mouse switches back and forth between "connected" and "lost connection" several times within a minute.

A recurring loss of connection in the Magic Mouse 1 indicates wobbly batteries.

A recurring loss of connection in the Magic Mouse 1 indicates wobbly batteries.

Known battery problem of the Magic Mouse 1

Solution 1: sheet of paper

The problem with unexpected disconnections can be due to the design of the first model of the Magic Mouse. Mac users have been reporting on this problem in forums for years. The reason for this is that the batteries are a little "loose" in the battery compartment of the mouse.

Depending on how you move the mouse, the power supply may be interrupted for a short time, which the mouse acknowledges with "lost connection", whereupon it reconnects immediately.

The solution is free and simple: you switch off the mouse, open the battery cover on the underside and place a sheet of paper on the batteries to cover the batteries. Then you close the lid and see if it helps. The purpose of the paper is to push the batteries more firmly into the holder to prevent wobbling that can interrupt the power supply.

A piece of paper can be used to increase the pressure on the batteries.

A piece of paper can be used to increase the pressure on the batteries.

Solution 2: Small cuboids made of aluminum foil

Another reason for the interruption of the power supply could be the springs that press against the negative pole of the batteries in the mouse. If the springs are worn out here, it can also happen that slight movements of the mouse are enough to break the contact with the batteries.

Here you can help yourself with small aluminum plates that you clamp between the battery and the spring. Please make sure that the aluminum blocks do not touch each other.

If the springs stop compressing the batteries properly, the batteries will lose connection. Small plates made of aluminum foil help here.

If the springs stop compressing the batteries properly, the batteries will lose connection. Small plates made of aluminum foil help here.

Fix blueooth problems

Problems with the Bluetooth connection can also cause the Magic Mouse or Magic Trackpad to disconnect. As with all computers, switching it off and on sometimes helps. You can do this via System Preferences> Bluetooth or via the Bluetooth icon in the menu bar on the Mac.

For severe cases, I have an article about 5+ ways to fix bluetooth connection problems.

Every now and then I also read that badly shielded USB-3 cables can cause problems with wireless mice and keyboards. The Magic Mouse 1 and 2 are no exception, because they also work via Bluetooth wireless protocol.

In between, a few reading recommendations:

The Preferences folder contains plist files that belong to the various input devices. If you delete these, it often solves strange quirks of the Magic Mouse or the Magic Trackpad.

The Preferences folder contains plist files that belong to the various input devices. If you delete these, it often solves strange quirks of the Magic Mouse or the Magic Trackpad.

Delete plist files

In case you're still unsuccessful in troubleshooting, there is one more thing you can do, which is delete the .plist files that are responsible for the mouse or trackpad. To do this, go to the "Go to" menu in the Finder and then hold down the ALT key (also called an option). Now the entry "Library" appears in the menu, which you call up.

In the library folder you open the folder "Preferences" and there you look for the following files, which you best drag onto your desk so that you can put them back in case of doubt:

  • com.apple.driver.AppleBluetoothMultitouch.trackpad.plist - Magic Trackpad
  • com.apple.driver.AppleBluetoothMultitouch.mouse.plist - Magic Mouse
  • com.apple.driver.AppleHIDMouse.plist - wired USB mouse
  • com.apple.AppleMultitouchTrackpad.plist - Magic Trackpad
  • com.apple.preference.trackpad.plist - Magic Trackpad

If these files have been removed from the Preferences folder, restart the Mac. When you restart, these files are recreated and any file problems are resolved.

If any tips helped you with troubleshooting, I would appreciate your comment.

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5 comments

  1. Jochen Strauss says:

    Thank you very much for the tips, none of which helped me, but got me on the right track. Two Apple Magic mice kept getting disconnected on their computers. Click a little on the mouse - and the connection has been re-established. Already tried to fix the batteries with paper, put away the USB cable, deleted the driver, doubled the negative pole with aluminum foil - all without success. Because of the tip with the aluminum foil, I finally took a critical look at the batteries upside down. The nipple on the positive pole (the small bump) was too flat and too wide to make permanent contact. Now there is a small washer between the mouse contacts and the positive terminals of the batteries - and all problems are eliminated!

    • Jen Kleinholz says:

      Hello Jochen! Thank you for your feedback signal. Here you can see what washers are so good for. : D

  2. Anke says:

    Wonderful, I almost went crazy with the mouse. I just applied all 3 tips from you and it finally works! Thanks!

  3. Thomas says:

    Paper helped - mouse does!

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