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Mac iMessages immediately fail to send

I have tried everything I could find online, but nothing hass worked. When I try to send a message from my Mac, it immediately fails to send. And when I have a discussion open with someone who is iMessaging me, it shows the "..." when they are typing, but nothing comes through. I had beta iMessage, and that worked most of the time, but since Mountain Lion, it's been a failure. However, iMessage does work perfectly on my guest account for some reason. What can I do to fix this?

MacBook Pro (15-inch Early 2011), OS X Mountain Lion, 2.2 GHz i7, 8 gb ram, 500 gb hd

Posted on Sep 25, 2013 10:59 AM

32 replies

Nov 21, 2013 11:08 AM in response to markj17

Glad to hear you found a solution.

7:08 pm Thursday; November 21, 2013

 iMac 2.5Ghz 5i 2011 (Mavericks 10.9)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad

Jan 31, 2014 6:06 PM in response to markj17

I was having this problem as well, but it just started last week, even though I updated to Mavericks when it came out.

I tried everything suggested in this and similar threads - resetting the keychain, repairing permissions, clearing the NVRAM, deleting every FaceTime and Messages plist file, checking the date and time, and finally reinstalling Mavericks. None of these things worked, so I made an appointment at the Apple Store. The Genius went through many of these same steps and after conferring with three of his coworkers and spending forty-five minutes working on this, he fixed it.

You know what he did? He turned of the firewall, restarted the computer, and turned the firewall back on with no changes to the settings whatsoever. Now it works. Maddening, but I'm glad these programs work again.

Mac iMessages immediately fail to send