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ArnieB Level 1 Level 1
My Magic Mouse keeps losing its connection. Has any one else had this happen to them. I reapplied the update and had gone through the set again but the connection repeatedly is lost. Luckily I still have my wired mouse plugged in or my IMAC would be useless.

IMAC, Mac OS X (10.5.6)
Solved by rozettj on Jun 12, 2015 7:07 PM Solved

I have seen lots of suggested solutions, including loose battery connections, resetting the PRAM, diddling around with preferences, etc.  I thought it must be something loose in the mouse itself because when I tapped it, it would reconnect.  But Apple support was convinced it was in the operating system, specifically the bluetooth software, even though this was an out of the box, new computer. So we reinstalled the OSX (Yosemite), and I have not had a problem since.  This did nothing to my existing documents, programs or preference. Nothing had to be reset.

  • uknowirock Level 1 Level 1
    Mine seems to lose it's connection quite often, kind of annoying really. Hope there is some news on this soon.
  • Barry Hemphill Level 8 Level 8
    Hello Arnie:

    I have suggested this elsewhere and it seems to have helped several people with similar problems.

    Trash a preference file and restart (

    Make the mouse a favorite:

    System preferences>bluetooth. Highlight the mouse and click on the little gear thing and select show more options. Click on the gear again and make the mouse a favorite.

  • stansil Level 1 Level 1
    Hello Barry,

    I was wondering if you could elaborate on your instructions regarding fixing the Magic Mouse disconnecting.

    1. Is there a certain preference file to trash and how do I restart


  • Barry Hemphill Level 8 Level 8
    Hello Stan:

    For future reference, you will get wider readership (and, hopefully, assistance) if you post questions as a new thread.

    The preference file I mentioned is located in Macintosh HD>library>preferences. After you restart, OS X will rebuild the preference file with default values automatically.

    As I indicated above, making a Bluetooth device a favorite frequently helps with disconnect issues.

  • stansil Level 1 Level 1
    Thanks for the info Barry. I followed your instructions and so far, I haven't had any disconnects. Hopefully, that took care of it.
  • Barry Hemphill Level 8 Level 8
    You are welcome, Stan.

  • Kenneth Haim Level 1 Level 1
    I have tried the solution listed here and it has not helped my magic mouse loses its bluetooth connection continually. (several times a minute) Does anyone have any other suggestions?

    Thanks for your help.
  • jeffbrooks Level 1 Level 1
    I was having the same problem... getting a real mouse with a cord fixed the problem instantly... the magic mouse is without question the worst thing to come out of apple since the mighty mouse... the connection goes in and out all day long... probably spent 10 minutes out of every hour waiting for lost connections... when it does work, you feel as though you have to press twice as hard, and hold on for dear life to keep the mouse working... I see the might mouse like dating the best looking girl in college even though she's as dumb as a fence post... it takes a long time to get past her looks, but once you do and dump her for something good looking and brighter, your life is a thousand times better... the amount of trouble a dumb girlfriend or rotten mouse provides isn't worth hanging it... avoid the magic mouse at all costs... it's not worth the trouble... it should be noted i lost the connection TWICE writing this post...

    Message was edited by: jeffbrooks
  • Poikkeus Level 4 Level 4
    A very helpful thread. I'm sure that many users aren't having many problems, but my past experience with wireless mice suggests that disconnection issues due to low power, inconsistent networks, and hardware constraints can make the way for an unpleasant computing experience. The basic features of the Magic Mouse are impressive, but I still haven't found anything that beats a powered Kensington trackball.
  • Wendy Bardsley Level 1 Level 1
    Yep, I'm losing the connection often as well with the new imac. I'll try the favorite fix and report back if it helps me.
  • yukialbany Level 1 Level 1
    Try logging in as a different user. Using the user that I installed MM was terrible. I logged off that user and logged into another user and things work fine now. And now when I log back on with the 'bad' user, things are fine there too.
  • ChadwickS Level 1 Level 1
    I found that my Magic Mouse started losing connections only after I switched the batteries from 1.5V regular AAs to rechargeable ones that turned out to be only 1.2V. Everything worked better after putting regular 1.5V batteries in the Magic Mouse.

  • Kevin Horgan Level 1 Level 1
    I have been having a similar problem. The mouse was first becoming very slow and sluggish and then I would eventually get disconnected or it would hang.

    I noticed this happens a couple of minutes after my Time Capsule started backing up my disk and if I stopped the backup then the mouse would return to normal after about 30 seconds. I tested this a little by manually starting the backup to my time capsule and sure enough the mouse starting getting slow again after a few minutes and return to normal once the backup was stopped again.

    So for now I am manually controlling my time capsule backup schedule while I hunt around for a cause and solution.



    Message was edited by: Kevin Horgan
  • Josh Schoenwald Level 1 Level 1
    FWIW, I had the same problems with my Magic Mouse and the trick with deleting the .plist file seemed to work. Also, I think part of the problem might be caused with an iPhone (or other bluetooth device) interfering with the mouse. I had my iPhone sitting on the desk with Bluetooth on (but not connected to anything) and it was closer to my computer than the mouse, which may have been a source of problems.
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