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When it comes to installing your new CAC reader onto your home computer, there’s a doubt that installing on Mac is much more complicated. Often, you’ll need to install a CAC Enabler just for your Mac to recognize the hardware. But don’t worry in this handy guide, we’ll walk you through how to install a CAC enabler for Mac and which one to choose.
Here’s the thing…. Mac has many different OS’s which means that there are many different CAC enablers. And some will work for particularly OS’s only.
MUST READ IMPORTANT INFO BEFORE YOU BEGIN
Before you get started downloading and installing your CAC Enabler, there is some information that you need to be aware of:
- Only download and install ONE CAC Enabler. Multiple CAC Enablers can cause your CAC Card reader not to work. If you currently have an incorrect CAC enabler installed, you need to uninstall and remove it before getting the correct one. This includes built-in Smart Card Readers for the newer OS’s.
- Some of these CAC Enablers will ask for a Keychain Password. You should already have this information. It’s your CAC PIN. But before you enter this information, make sure you’ve already selected your CAC Certificate. And you need to use your full CAC pin. Failure to do so can actually lead to you getting locked out of your CAC Card. If this happens, you’ll have to go to your nearest ID Card Office or PSD to get it unblocked.
- After successfully installing your CAC Enabler, you need to restart your computer before trying to access any CAC protected site. This ensures that your computer has properly recognized and installed the CAC Enabler.
- Just because you’ve properly installed and set up your enabler, that doesn’t mean that it will work with all browsers–particularly Firefox. As popular of a browser it is, Firefox is notorious for not allowing CAC-protected sites to be accessed. This is why I recommend using Google Chrome. It has the least obstructions for you when it comes to using your CAC Reader.
What CAC Enabler Do You Need For Your OS?
In order to make sure that you download the right OS, be sure to use our handy Table of Contents to jump to the proper section.
And with that, let’s get your Mac system CAC Card ready!
Catalina (10.15.x)
If you’ve purchased a Mac with the Catalina OS installed, STOP RIGHT HERE.
Catalina comes pre-equipped with a built-in CAC Enabler. This means you do not need to install a third-party program. If you do, it may interfere with your built-in enabler and cause your CAC to not be recognized. Just be sure that you have the proper DOD certificates installed.
But what if you purchased your Mac and then upgraded to the new system?
If you haven’t installed any third-party enablers, the built-in function should automatically start working. But if you have previously installed any third-party CAC enablers, you’re going to have to uninstall and completely remove those first.
Mojave (10.14.x)
Similar to the Catalina OS, Mojave also has a built-in Smart Card Reader. This means that a third-party CAC enabler program may not be necessary. So before downloading any other enabler, test out the built-in first–just make sure you have the proper DOD certificates needed.
If your Mojave’s built-in reader is not working, then you can proceed to pick up another CAC enabler. There are 4 verified readers that work for Mojave that we know of.
Each of these should work for any type of CAC Card.
High Sierra (10.13.x)
High Sierra is another Mac OS with a built-in Smart Card reader. However, unlike Mojave or Catalina, you cannot access CAC-protected sites through Safari. They are not supported through Safari in this OS.
You need to use Google Chrome for optimal results. If you are adamantly opposed to using Chrome, I’d recommend to go ahead and update your Mac OS to Mojave or Catalina (if supported). Afterwards, you should find you don’t need a CAC enabler as long as you have the proper certificates.
However, if things aren’t working out the way they should, you do have some options for third party CAC enablers.
These have been verified to work with High Sierra and with every CAC Card type we’ve come across.
Sierra (10.12.x)
Sierra is the last of the Mac OS’s that has a built-in Smart Card Reader. However, you need to be aware that this reader will not function with the Safari browser even with the proper certificates.
You’ll need to utilize Google Chrome along with the proper DOD (or other) certificates.
There have been reports of the Sierra built-in CAC reader failing to operate properly. And in that case, you’re going to need to download one of these verified CAC enablers:
These CAC Enablers work with every type of CAC Card.
One thing to note is that if you decide to utilize PKard with Sierra, you need to make sure that you’re using PKard version 1.7 or higher.
El Capitan (10.11.x)
Unlike its newer OS counterparts, El Capitan does not come with a built-in smart card reader. You will be required to download and install a third-party program. Thankfully, there are 5 different CAC Enablers you can use.
One thing to note is that Smart Card Services will not work with all types of CAC Cards. If your CAC Card is designated as Oberthur ID One 128 v5.5a D, Smart Card Services cannot read it. You can find this information on the back of your CAC card itself near the magnetic strip.
This can be solved one of two ways. Either opt for a different enabler or get a new CAC Card.
Yosemite (10.10.x)
Yosemite requires a third-party enabler to be installed in order for your CAC Card to be recognized. There are 5 different verified options for Yosemite users:
Although a verified option, we recommend against using Smart Card Services. The reason for this is that Smart Card Services doesn’t accept all types of CAC Cards–particularly those labeled Oberthur ID One 128 v5.5a D.
Mavericks (10.9.x)
Mavericks is another Mac OS without a built-in Smart Card Reader. This means that you’re going to need to download a CAC Card Enabler. We’ve found five different platforms that work with this OS.
However, we suggest steering clear of Smart Card Services if you’re carrying the Oberthur ID One 128 v5.5a D CAC Card. This enabler does not recognize this particular type of CAC Card.
Mountain Lion (10.8.x)
Since Mountain Lion OS has no built-in Smart Card Reader, you’ll have to avail of a third-party CAC Card Enabler. There are 5 different options to choose from for this platform.
However, if you’re using the CAC Card type, Oberthur ID One 128 v5.5a D, steer clear of Smart Card Services. They don’t recognize this type of card.
Lion (10.7.x)
Lion is one of Mac’s older operating systems. But that doesn’t mean you’re completely out of luck if need to use a CAC card on it. There are 4 different options you have.
It’s worth mentioning that if you are planning on using Smart Cards Services, ensure you don’t have an Oberthur ID One 128 v5.5a D CAC Card. The program doesn’t work with the typing.
Snow Leopard (10.6.x)
The first recommendation I have for Snow Leopard users is to upgrade their system as soon as possible. But if due to constraints you are unable to, there are still a few paths you can take when it comes to ensuring your CAC Card can be read.
Just don’t opt for Smart Card Services if you’re using an Oberthur ID One 128 v5.5a D CAC Card.
Leopard (10.5.x)
If you’re still using Leopard, our first recommendation is to upgrade your OS immediately. However if you’re unable to, there’s still hope for using a CAC Card on your computer.
Your available options for CAC Card Enabler are:
However, TENS will only work if your computer has an Intel processor. It won’t work if you’re using a PPC.
Cached
Again, the first recommendation for Leopard is not downloading a new CAC enabler but updating your system.
Our Top CAC Enabler Picks for All Operating Systems
When it comes to which enablers we like best, it boils down to two.
PKard and ActivClient for Mac.
Either one of these is compatible with just about every OS on this list–with the exception of Catalina (Be sure to use their built-in enabler.)
Plus they have vendor support. And that can be quite handy if you’re having issues with your CAC enabler. However, they don’t come free. ActivClient for Mac rings in at around $50 while PKard is available for around $40.
So, you’ve decided to download an older version of Mac OS X. There are many reasons that could point you to this radical decision. To begin with, some of your apps may not be working properly (or simply crash) on newer operating systems. Also, you may have noticed your Mac’s performance went down right after the last update. Finally, if you want to run a parallel copy of Mac OS X on a virtual machine, you too will need a working installation file of an older Mac OS X. Further down we’ll explain where to get one and what problems you may face down the road.
A list of all Mac OS X versions
We’ll be repeatedly referring to these Apple OS versions below, so it’s good to know the basic macOS timeline.
| Cheetah 10.0 | Puma 10.1 | Jaguar 10.2 |
| Panther 10.3 | Tiger 10.4 | Leopard 10.5 |
| Snow Leopard 10.6 | Lion 10.7 | Mountain Lion 10.8 |
| Mavericks 10.9 | Yosemite 10.10 | El Capitan 10.11 |
| Sierra 10.12 | High Sierra 10.13 | Mojave 10.14 |
| Catalina 10.15 |
STEP 1. Prepare your Mac for installation
Given your Mac isn’t new and is filled with data, you will probably need enough free space on your Mac. This includes not just space for the OS itself but also space for other applications and your user data. One more argument is that the free space on your disk translates into virtual memory so your apps have “fuel” to operate on. The chart below tells you how much free space is needed.
Note, that it is recommended that you install OS on a clean drive. Next, you will need enough disk space available, for example, to create Recovery Partition. Here are some ideas to free up space on your drive:
- Uninstall large unused apps
- Empty Trash Bin and Downloads
- Locate the biggest files on your computer:
Go to Finder > All My Files > Arrange by size
Then you can move your space hoggers onto an external drive or a cloud storage.
If you aren’t comfortable with cleaning the Mac manually, there are some nice automatic “room cleaners”. Our favorite is CleanMyMac as it’s most simple to use of all. It deletes system junk, old broken apps, and the rest of hidden junk on your drive.
Download CleanMyMac for OS 10.4 - 10.8 (free version)
Download CleanMyMac for OS 10.9 (free version)
Download CleanMyMac for OS 10.10 - 10.14 (free version)
STEP 2. Get a copy of Mac OS X download
Normally, it is assumed that updating OS is a one-way road. That’s why going back to a past Apple OS version is problematic. The main challenge is to download the OS installation file itself, because your Mac may already be running a newer version. If you succeed in downloading the OS installation, your next step is to create a bootable USB or DVD and then reinstall the OS on your computer.
Firefox For Mac Download Latest Version
How to download older Mac OS X versions via the App Store
If you once had purchased an old version of Mac OS X from the App Store, open it and go to the Purchased tab. There you’ll find all the installers you can download. However, it doesn’t always work that way. The purchased section lists only those operating systems that you had downloaded in the past. But here is the path to check it:
- Click the App Store icon.
- Click Purchases in the top menu.
- Scroll down to find the preferred OS X version.
- Click Download.
This method allows you to download Mavericks and Yosemite by logging with your Apple ID — only if you previously downloaded them from the Mac App Store.
Without App Store: Download Mac OS version as Apple Developer
If you are signed with an Apple Developer account, you can get access to products that are no longer listed on the App Store. If you desperately need a lower OS X version build, consider creating a new Developer account among other options. The membership cost is $99/year and provides a bunch of perks unavailable to ordinary users.
Nevertheless, keep in mind that if you visit developer.apple.com/downloads, you can only find 10.3-10.6 OS X operating systems there. Newer versions are not available because starting Mac OS X Snow Leopard 10.7, the App Store has become the only source of updating Apple OS versions.
Purchase an older version of Mac operating system
You can purchase a boxed or email version of past Mac OS X directly from Apple. Both will cost you around $20. For the reason of being rather antiquated, Snow Leopard and earlier Apple versions can only be installed from DVD.
Buy a boxed edition of Snow Leopard 10.6
Get an email copy of Lion 10.7
Get an email copy of Mountain Lion 10.8
The email edition comes with a special download code you can use for the Mac App Store. Note, that to install the Lion or Mountain Lion, your Mac needs to be running Snow Leopard so you can install the newer OS on top of it.
How to get macOS El Capitan download
If you are wondering if you can run El Capitan on an older Mac, rejoice as it’s possible too. But before your Mac can run El Capitan it has to be updated to OS X 10.6.8. So, here are main steps you should take:
1. Install Snow Leopard from install DVD.
2. Update to 10.6.8 using Software Update.
3. Download El Capitan here.
“I can’t download an old version of Mac OS X”
If you have a newer Mac, there is no physical option to install Mac OS versions older than your current Mac model. For instance, if your MacBook was released in 2014, don’t expect it to run any OS released prior of that time, because older Apple OS versions simply do not include hardware drivers for your Mac.
But as it often happens, workarounds are possible. There is still a chance to download the installation file if you have an access to a Mac (or virtual machine) running that operating system. For example, to get an installer for Lion, you may ask a friend who has Lion-operated Mac or, once again, set up a virtual machine running Lion. Then you will need to prepare an external drive to download the installation file using OS X Utilities.
After you’ve completed the download, the installer should launch automatically, but you can click Cancel and copy the file you need. Below is the detailed instruction how to do it.
STEP 3. Install older OS X onto an external drive
The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks.
- Start your Mac holding down Command + R.
- Prepare a clean external drive (at least 10 GB of storage).
- Within OS X Utilities, choose Reinstall OS X.
- Select external drive as a source.
- Enter your Apple ID.
Now the OS should start downloading automatically onto the external drive. After the download is complete, your Mac will prompt you to do a restart, but at this point, you should completely shut it down. Now that the installation file is “captured” onto your external drive, you can reinstall the OS, this time running the file on your Mac.
- Boot your Mac from your standard drive.
- Connect the external drive.
- Go to external drive > OS X Install Data.
Locate InstallESD.dmg disk image file — this is the file you need to reinstall Lion OS X. The same steps are valid for Mountain Lion and Mavericks.
How to downgrade a Mac running later macOS versions
If your Mac runs macOS Sierra 10.12 or macOS High Sierra 10.13, it is possible to revert it to the previous system if you are not satisfied with the experience. You can do it either with Time Machine or by creating a bootable USB or external drive.
Instruction to downgrade from macOS Sierra
Web Browsers
Instruction to downgrade from macOS High Sierra
Instruction to downgrade from macOS Mojave
Instruction to downgrade from macOS Catalina
Before you do it, the best advice is to back your Mac up so your most important files stay intact. In addition to that, it makes sense to clean up your Mac from old system junk files and application leftovers. The easiest way to do it is to run CleanMyMac X on your machine (download it for free here).
Visit your local Apple Store to download older OS X version
If none of the options to get older OS X worked, pay a visit to nearest local Apple Store. They should have image installations going back to OS Leopard and earlier. You can also ask their assistance to create a bootable USB drive with the installation file. So here you are. We hope this article has helped you to download an old version of Mac OS X. Below are a few more links you may find interesting.
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