Impossible to activate iMessage and Facetime in Mavericks

+1 same problem..

I've tried all that u did, plus a clean installation..... Still no luck

Thanks... Maybe I'll hold off on the clean install then. Problem seems to be bigger. Does your system.log have similar errors when trying to log on?

Did two clean installs, no help. An other old iCloud log in works just fine. But my regular login doesn't. On my Macbook Air no prob. It seems that my iMac (late 2010) doesn't accept my iMessage setup for my regular iCloud login. My Mac accepts my wifes' login with no problem. It seems to be login dependend!! Wake up Apple, this is serious, really!

Message was edited by: Albert_Einstein

Can anyone with same problem help to check whether missing the Serial key in "About this Mac"?

Same Issues....

Yes my mac has the serial key missing because I had the motherboard changed 2 years ago.

I found a solution, but only to half the problem. Im using an early 2009 MP. I dont need imessage necessarily on this MP, but i do use ichat. If you choose to 'skip' the imessage/icloud login it will open your ichat and log in. I guess we'll just need to wait for Apple to send out an update to access iMessage...

Yes... ichat, yahoo, aol services work.. this is a problem with your apple id not connecting with iMessage (icloud account).

My Mac serial Key is missing, Now asking Apple to flash it back, but need to wait, and i wil update u.
because from some post in 10.8, someone mentioned that, cant login due to missing serial.

Hello All,

I did post a solution to this... however it appears Apple has taken it down.

With that said... My problem was definately to do with the missing serial number due to the fact that I had my mother board replaced 2 years ago by Apple. They never wrote the serial number back to the board.

Anyway, There is software on the internet that will allow you to write the serial number back to the motherboard.... I am guessing the url of the program I used is why my post was removed. Like I said in my original posting of the fix.... You should not do this if you don't know what you are doing... take your Mac into the Apple Store and have an Apple technician fix this for you. Once it is done your iMessage and Facetime will work as mine does now.

What pointed me in the correct direction is looking at the system.log file when you go to sign in to either of these to applications... they were basically saying your certificate is wrong, peer computer unknown and help from Apple online support helping me go through some of the things I didn't try to point me in the right direction.

Hope this helps.

My problem is very similar, getting:

25/10/13 21:56:12,674 apsd[66]: Failed to evaluate trust: No error. (0), result=5; retrying with revocation checking optional

25/10/13 21:56:12,681 apsd[66]: failed to evaluate trust: No error. (0), result=5; retrying with system roots

25/10/13 21:56:12,685 apsd[66]: Root certificate is not explicitly trusted

25/10/13 21:56:12,686 apsd[66]: Untrusted peer, closing connection immediately

And my Serial Number is intact.

I have one solution. Reinstalling on a seperate small disk and test FIRST the iMessage and Facetime: it worked.

Then I erased the internal drive, reinstalled Mavericks agaion (Third time) and tested the iMessage FIRST! Worked. Now I reinstall alll the rest? Let's hope that not another new problem comes up. But this was finally my solution!!

Paulo,

One of the things that Apple did have me do... which didn't work for me... is check to see if you have any alternate apple ID's associated with your account https://appleid.apple.com

If so remove them and try again. In your case maybe this will work. The problem with the certificate could be on the apple side not matching up.

Hope this helps.