graces63
Level 1 (0 points)

Q: iMessage suddenly quit working on my Mac. Why?

i've been using iMessage flawlessly on my Mac, until this morning. its quit working. Why? What do I do to restart it?

iMac, iOS 8.4.1

Posted on Sep 10, 2015 10:55 AM

by Eric Root,Apple recommended
Eric Root Eric Root
Level 9 (72,233 points)
iTunes
A:

Will the application open? Are you logged in?

 

Messages fonts/validate with Font Book : Helvetica Neue, Lucida Grande and AppleGothic


Do a backup.

 

Quit the application.

 

Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J.  When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder.  Select Library. Then go to Preferences/com.apple.iChat.plist.  Move the .plist to your desktop.

 

Restart the computer, open the application and test. If it works okay, delete the plist from the desktop.

 

If the application is the same, return the .plist to where you got it from, overwriting the newer one.

 

If that doesn’t work, repeat the above but delete the com.apple.imagent.plist

 

Thanks to leonie for some information contained in this.

Posted on Sep 11, 2015 10:01 AM

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graces63

Q: iMessage suddenly quit working on my Mac. Why?

  • All replies
  • Helpful answers

  • by Eric Root,Apple recommended

    Eric Root Eric Root Sep 11, 2015 10:01 AM in response to graces63
    Level 9 (72,233 points)
    iTunes
    Sep 11, 2015 10:01 AM in response to graces63

    Will the application open? Are you logged in?

     

    Messages fonts/validate with Font Book : Helvetica Neue, Lucida Grande and AppleGothic


    Do a backup.

     

    Quit the application.

     

    Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J.  When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder.  Select Library. Then go to Preferences/com.apple.iChat.plist.  Move the .plist to your desktop.

     

    Restart the computer, open the application and test. If it works okay, delete the plist from the desktop.

     

    If the application is the same, return the .plist to where you got it from, overwriting the newer one.

     

    If that doesn’t work, repeat the above but delete the com.apple.imagent.plist

     

    Thanks to leonie for some information contained in this.

  • by sarolani,

    sarolani sarolani Mar 23, 2016 7:37 PM in response to Eric Root
    Level 1 (0 points)
    Mac OS X
    Mar 23, 2016 7:37 PM in response to Eric Root

    I don't have the ’Show Library Folder’ option

  • by Eric Root,

    Eric Root Eric Root Mar 24, 2016 9:21 AM in response to sarolani
    Level 9 (72,233 points)
    iTunes
    Mar 24, 2016 9:21 AM in response to sarolani

    In Finder hold down the option/alt key while selecting the Go menu item. Select Library.