Daily_llama

Q: iMessage setup - register contacts

How does one “register” contacts with iMessage?  I attempt to send a text message from my Mac to contacts in my address book whom I’ve received texts from  before, yet iMessages responds that the individual contact (either phone # or email address) is not registered.

MacBook Pro (17-inch Early 2011), OS X Yosemite (10.10.3), FCP 10.2

Posted on Sep 20, 2015 2:35 PM

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Q: iMessage setup - register contacts

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  • by Daily_llama,

    Daily_llama Daily_llama Oct 14, 2015 3:52 PM in response to Daily_llama
    Level 1 (8 points)
    Mac OS X
    Oct 14, 2015 3:52 PM in response to Daily_llama

    Well, that was like watching grass grow.  Never mind.  I’ve switched to Google Handouts and it works fine.

  • by Lori in the hills,

    Lori in the hills Lori in the hills Jul 26, 2016 1:25 PM in response to Daily_llama
    Level 1 (8 points)
    Desktops
    Jul 26, 2016 1:25 PM in response to Daily_llama

    Same problem here.

     

    I just imported my contacts into a new Macbook Pro, from a previous Macbook. (In ".abbu" format, via USB stick. Both computers running OS 10.11.5). Then tried to send messages using "Messages" app. I can send messages to some contacts, but for others I get the "is not registered with iMessages" error. This is happening with a contact that I used frequently to communicate with through Messages and FaceTime on my old computer. There's no way she's not registered, I know she uses Messages all the time.

     

    I don't have these contacts synced with a phone, tablet, or anything else, I've only ever used them on the computer, for Messages and FaceTime.

     

    Any help greatly appreciated!

  • by Eric Root,

    Eric Root Eric Root Jul 27, 2016 10:03 AM in response to Lori in the hills
    Level 9 (72,578 points)
    iTunes
    Jul 27, 2016 10:03 AM in response to Lori in the hills

    If the below doesn't fix your problem, you might want to start your own post since this one is from last year. A new post would be much more visible. You can link to this one.

     

    Might be a corrupt .plist.

     

    Do a backup, preferably 2 backups on 2 separate drives.

     

    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 and Ralph Johns (UK) for some information contained in this.