Hi there, like a lot of the other people who are posting here, my FaceTime on my Mac isn't working. I have tried all of the tips in the various blog posts, discussion forums etc. Is the problem on Apple's side or on al of our Macs individually? Thanks

Look to your right under More Like This. Also at the top of the page is the Search field. If in fact lots of people are posting the same problem, then perhaps you can find a solution by looking at those posts before posting the same problem yourself. For example, Messaging and FaceTime not working.

iOS- Troubleshooting FaceTime and iMessage activation

In addition to Kappy's reference, when you say all of the tips, what do you mean? Do you have an Apple ID, email address and phone number, and WiFi access?

Have you setup FaceTime > Preferences with the Apple ID and email address?

There is no Apple problem with FaceTime...I have used it almost daily during the past week with no difficulties at all.

And, I can support Ralph here having just used FaceTime yesterday and the weekend before, so it has been working here without a problem.

Have you tried reinstalling OS X? If not, let me suggest you do the following:

Try these in order testing your system after each to see if it's back to normal:

1. a. Resetting your Mac's PRAM and NVRAM

b. Intel-based Macs: Resetting the System Management Controller (SMC)

2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:

Boot to the Recovery HD: Restart the computer and after the chime press and hold down the

COMMAND and R keys until the Utilities menu screen appears. Alternatively, restart the

computer and after the chime press and hold down the OPTION key until the boot manager

screen appears. Select the Recovery HD and click on the downward pointing arrow button.

3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.

When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.

Reinstall the 10.8.5 update10.8.5 Mountain Lion Update v10.8.5 (Combo).

4. Reinstall Lion/Mountain Lion, Mavericks: Reboot from the Recovery HD. Select Reinstall Lion/Mountain Lion, Mavericks from the Utilities menu, and click on the Continue button.

Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

Reinstall the 10.8.5 update10.8.5 Mountain Lion Update v10.8.5 (Combo).

The problem is with Apple. It is not individual computers/devices or settings.

Nobody should have to reinstall their OS X - it is not an OS X problem at all - everything was working fine until about a week ago when Apple decided to switch of Face Time functionality!!