jescoll721

Q: iMessage not working on Mac

I am using a MacBook Air (OS X Yosemite) and the iMessage is not working. Some of my contacts are appearing in red and I receive and error message saying that the message could not be delivered. What should I do?

MacBook Air, OS X Yosemite (10.10.5)

Posted on Nov 9, 2015 9:04 AM

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Q: iMessage not working on Mac

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  • by Linc Davis,

    Linc Davis Linc Davis Nov 9, 2015 12:12 PM in response to jescoll721
    Level 10 (207,963 points)
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    Nov 9, 2015 12:12 PM in response to jescoll721

    Please take each of the following steps that you haven't already tried. Stop when the problem is resolved.

    1. Open the Messages preferences window and select the Accounts tab. On the left is a list of the messaging accounts that you've defined. Select iMessage. Make sure that the Apple ID shown is valid. If it is, check the box marked

              Enable this account

    if it's not already checked.

    2. Sign out of iMessage on all your devices and sign back in. If you've enabled two-step verification for the Apple ID that you use with iMessage, you must generate an application-specific password and enter it when prompted. Test.

    3. Take this step if you have an iPhone linked to the same Apple ID as the Mac.

    Follow the instructions in this support article, under the heading

              To use Continuity for SMS and MMS with your iPhone and your Mac, iPad or iPod touch

    If text forwarding is already enabled on the phone, disable it and then re-enable it.

    Quit and relaunch Messages on the Mac.

    Credit for this observation to ASC member Apple Advocate.