Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by a product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.
The Mac OS X (Operating System Ten) Mac OS X is the newest in a long line of Graphical User Interface (GUI) operating systems, first started in 1984 (when the Apple Macintosh was introduced). The Macintosh and its operating system were based on the work done at Xerox PARC (Palo Alto Research Complex), but not commercialized by Xerox. Mar 25, 2021 If you have recently purchased a Mac, surely, by looking at the keyboard you will have already noticed the function keys at the top. In traditional keyboards, the function keys have the words F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, even on the Mac this wording is present, but above or next to it you will find another small icon. Apr 25, 2012 The next part is really important, so make sure you do it correctly! By default, files on your computer are not able to execute code. This is a security feature designed to make sure you are only running code that you explicitly tell the operating system it can run. You need to tell Mac OS X that you want to be able to execute this file. Apr 17, 2020 Starting this morning, I’m seeing “no available sessions on this server” while trying to connect to two different Mac OS machines. Both of the Macs are running Mac OS 10.15.4 and NoMachine 6.9.2. The client machine trying to connect to the Macs is running Windows 10, with NoMachine 6.9.2 installed. Jul 24, 2020 If you're still unable to delete apps on Mac or if you’re worried you won't do it correctly and want a safer alternative, there’s the easy method of uninstalling apps from your Mac so you don't have to force delete applications. It actually does a better (and safer) job and in a fraction of the time.
If your macOS isn't up to date, you may be able to update to a later version.
From the Apple menu in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.
These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.
If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.
macOS | Latest version |
---|---|
macOS Big Sur | 11.3 |
macOS Catalina | 10.15.7 |
macOS Mojave | 10.14.6 |
macOS High Sierra | 10.13.6 |
macOS Sierra | 10.12.6 |
OS X El Capitan | 10.11.6 |
OS X Yosemite | 10.10.5 |
OS X Mavericks | 10.9.5 |
OS X Mountain Lion | 10.8.5 |
OS X Lion | 10.7.5 |
Mac OS X Snow Leopard | 10.6.8 |
Mac OS X Leopard | 10.5.8 |
Mac OS X Tiger | 10.4.11 |
Mac OS X Panther | 10.3.9 |
Mac OS X Jaguar | 10.2.8 |
Mac OS X Puma | 10.1.5 |
Mac OS X Cheetah | 10.0.4 |