iMessage on my mac says every contact is not registered with iMessage

Also always make sure your "Messages" account is active! I know it sounds silly, but I was not able to send/receive and messages on my MacBook Air for about two weeks until I realized that somehow my account showed "inactive." How to make sure you aren't having the same issue? Messages > Preferences > Accounts. The left side of the screen should show all accounts on your Mac (:

Hi! I had the same problem. Here's what fixed it for me:

On my Macbook Pro

1. I selected the "Messages" App.

2. Then at the top left corner of the screen, you'll see your little Apple icon, beside that is the selections of "Messages," "File," "Edit," "View," "Buddies," "Window," and "Help."

3. Click on "Messages."

4. Then, click on "Preferences."

5. Then you're going to see two tab options "General," and "Accounts."

6. Select "Accounts."

7. Make sure you are logged in with your Apple ID on that. (That was my problem, I was not logged in with my Apple ID for the Messages Application on my Macbook).

8. After that, you should be all set up.

9. I restarted my laptop after I did this. Afterwards, I went to my iPhone and selected Settings > Messages > Text Message Forwarding, and I saw that my Macbook is connected. (I didn't see that before).

Hope this helps!

I deleted that file and I don't notice anything different. Still can't send/receive iMessages.

I've had the same problem.

I've been on the phone with Apple multiple times and now I am at the same stage, to speak with a senior engineer. It's extremely frustrating and affecting business.

I just tried that. My latest update it said was September 16. It didn't let me move it to the desktop. I deleted it (not sure if that was ok to do), and absolutely nothing has changed with Messages.

PA school?

I think we're at the same school. I'm not in the PA program though. I'm in dental.

Oh, I'm at a satellite location that doesn't have a dental school, so we wouldn't be sharing a wifi connection.

Oh I see. Well I have successfully gotten Mavericks back on my mac and tested the iMessage while uploading and it did not work. Looks like we are back to the drawing board.

I have the exact same problem since 9/9. iMessage only working on my iphone. not on my Mac or ipad, stopped synching all of a sudden on that day.

No such luck here.

Yep, still a no go on my end. I'll just keep thinking happy thoughts.

YALL ARE SPEAKING MY EXACT THOUGHTS RIGHT NOW!!

SOS APPLE PLEASE HELP!!!!!!

It seems like it's not the Beta. Some of us, like me, don't have it. Some of us downloaded it in an attempt to fix it. And some had it for longer.

huh, interesting. But does seem to be tied in some way to Sept. 9th, right? That's got to be something.

I'll keep tinkering, but hopefully someone on this thread will get the fix. ;-)