iMessage is not working on my mac.

I deleted all data from Flash Player, set the radio button to 'ask' and restarted iMessage. FINALLY. It worked. Thank you all for posting in here. I am so glad to not have to login 4 times in a row. 🙂

Wow, not sure how you figured that one out, but it worked perfectly. I didn't block everything, just did ask. Thanks! 😉

Thanks, Guido, but do I really want to lose that data?

None of this is working for me. Tried all fixes in this thread and no luck.

Any ideas?

Disable iCloud.

Repair permissions.

(Clear caches).

Restart system.

Enable iCloud.

Can you please provide more steps on how to do this?

1. Disable iCloud.

Go to System preferences > iCloud.

Disable all features in the right, and sign out your account.

2. Repair permissions.

Launch Disk Utility, choose bootable partition, and switch to First Aid section.

Run Repair Permissions on that volume.

3. (Clear caches).

It is not necessary but I think it would be useful.

You'll be able to do this by using one of the common maintainance applications, like CleanMyMac.

You can also do this using Terminal, but I'm very goot at it.

But you can google of cause, how to clear user/system cahes on mac.

4. Restart system.

You'll do it without my help)

5. Enable iCloud.

Do exactly what you did in the beginning but in reverce orger.

Login to Messages.

I can't guarantee it will work. But in my case (I don't have Flash installed) it has helped.

Good luck!

Thanks for that. Still no luck tho.

What system are you on?

Mavericks.

Hm... I think, your case is something new.

Wait couple of days. I think decision will come.

Or try to experiment yourself.

By the way, do you use flash plug-in?

If Yes, try to get rid of it.

I don't use that plug-in, and feel pretty comfortable.

Yes, I updated flash player last night.

How do I delete flash?

Thanks for your help!

http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html

No luck. But thank you anyway.

This didn't solve my problem.

However I read further about someone saying they did this as well as signing out of iCloud. I started checking iCloud to see the settings and the iMessage account didn't have all my contact information. That may be a very vague statement and I will try to explain.

For whatever reason, I used my Gmail email for my Apple ID as well as Gmail. There looked to be both Google Talk (using Gmail ID) and then iMessage which had Gmail and iCloud email but not my phone? I don't know how all that syncs/works out..but it was my phone that wasn't activated on my Mac. I'm new to Mac so this is something I would have to sit and work on to understand. (i just finally figured out contacts syncing with work and personal and all my devices). Anyway, once I activated my phone, it then all connected and appears to be working. So check your acounts in iMessage.