Go to Plug-ins > Trend Micro Security (for Mac) to open the TMSM server console. Go to Server Updates > Update Source and make sure that Trend Micro’s ActiveUpdate Server option is selected. Go to Server Updates > Manual Updates. Select Trend Micro Security (for Mac) Agent and deselect the rest of the options. Choose Update.

Check compatibility

You can upgrade to OS X El Capitan from OS X Snow Leopard or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.
MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008)
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with OS X El Capitan, the installer will let you know.

Make a backup

Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.

Get connected

It takes time to download and install OS X, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.

Download OS X El Capitan

For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS.
If you still need OS X El Capitan, use this link: Download OS X El Capitan. A file named InstallMacOSX.dmg will download to your Mac.

Install the macOS installer

Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.

Begin installation

After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X El Capitan.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.

Allow installation to complete

Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both OS X and related updates to your Mac firmware.

Learn more

  • OS X El Capitan won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
  • You can use macOS Recovery to reinstall macOS.

El Capitan [10.11.x]

Released on 30 September 2015

If you've recently upgraded from any version of Mac OS X to 10.11.x (El Capitan)[and you were successfully using your CAC prior to the upgrade], you'll need to uninstall your CAC enabler, restart computer, then install a new El Capitan compatible CAC enabler from links at table 4 on the CAC Enablers page.

Download

If you've just updated your Mac OS from 10.11.3 to 10.11.6 and your SCR 331, 3310, 3300v2, or 3500 model reader has stopped working, you may need to update the driver per https://forums.developer.apple.com/message/127598# You'll see in epeterso's 29 March reply where it has a link to the scmccid_mac_5.0.35.zip file

Some people have had to disable Apple's SIP (System Integrity Protection). SIP removes root rights to all system files. So, any driver not signed by Apple will not be allowed to install. To turn this off, please look here.

If you are planning on upgrading to El Capitan (10.11.x) from Mountain Lion (10.8.x), Lion (10.7.x) or Snow Leopard (10.6.x), you need to make sure your computer can support it. Apple states that IF your computer worked with Yosemite (10.10.x) or Mavericks (10.9.x), it will work with El Capitan. Read more atOS X Daily

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If you are having DTS (Defense Travel System) problems with El Capitan, please look here

The following information is provided for your situational awareness while setting up the utilization of your CAC on your Mac. It is updated as additional information is available and your input is appreciated for solutions not outlined here. Installation instructions can be found here.

NOTICE: The links to vendors / products is an attempt to save you time searching for the specific item, by linking you directly to the item shown. You will notice I have multiple [when I can find] vendors to choose from. I have no personal preference as to who you decide to purchase from. I am not endorsing any particular product, I'm merely letting you know what works and where you can get it from.

Windows on your Mac: We know you have made a conscious decision to “be a Mac,” but the Government / Microsoft have not. DTS and signing forms used to only be available to Windows users, but are now available on Macs. The last item you cannot do on a Mac is digitally encrypt and / or decrypt emails in OWA. To do this, you'll need to use Windows through a Virtual Machine, such as Parallels (discounted prices), VMware Fusion (Parallels vs. VMware comparison), or VirtualBox or through Apple’s native Boot Camp (alternate guide). This will require you to have a licensed copy of Microsoft Windows, install the DoD certificates, and make sure your Internet Explorer web browser is configured correctly. With these programs, you can install the S/MIME control software within your web browser. The benefit of the Virtual Machines over Boot Camp is that it will allow you to run Windows as an additional program (without restarting your computer) and keep OS X running the entire time.

Discounted prices on the programs mentioned below can be viewed here

NOTE: If your CAC reader is not being recognized by your virtual Windows, follow this guidance:
VMware Fusion: From the menu bar, select Virtual Machine, then USB. Find your CAC reader and select it.
Parallels Desktop- (In Coherent mode): Click the red parallel lines in the menu bar, Select Devices, USB, find your CAC reader and select it.
Parallels Desktop - (Not in Coherent mode): Simply plug your reader into the computer and select whether you want to use it in Mac or Windows. You may also need to click the word Devices in the top row, USB, then your CAC reader.

VirtualBox: Click the word Devices (at the top of the screen), then USB Devices, and select your CAC reader. When you want to use it on your Mac, go to the same location and remove the checkmark. If you receive an error message when trying to select the reader here follow these instructions:

* In the VirtualBox GUI, click on USB (small icon in the list of devices).
* Then check 'Enable USB Controller' and 'Enable USB EHCI controlling.'
* Lowest on the beach, you'll see a list of icons to your right. Check first. A box appears 'a new filter'. Check it.
* By clicking on the icon below, representative of a USB plug with a +, you'll see a list of drivers.
* Select the one that corresponds to your USB drive. Check it added in the filter window.

DTS (Defense Travel System) See the DTS specific page for support

CAC Readers: With a variety of CAC readers available today there are also a variety of issues. The SCR series of CAC readers work very well. The SCR-331 reader may need a Firmware Update. See several different models of USB CAC readers here. You will see a small note on some of the readers to show you how to make them compatible with your Mac. Here is a web page that lists all known CAC readers and whether they are supported, should work, or unsupported with the Mac OS'.

HQDA Citrix access information for your Mac How to guide

DoD Root certificates on your Mac only go up to the CA on your CAC, so, if your CAC has a CA below 32 you need to install the CAs from your CAC CA to 32 and CA Email to 32. You can download the AllCerts.zip file, then double click the individual certificates you need in the folder.

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Outlook Web Access / App (OWA): The use of OWA on Mac sometimes times out. Beware that when using OWA on your Mac if you are inactive on the primary window, for example: the Inbox, while replying to an email, the browser may time out. On a Windows computer ActivClient (middleware) software maintains communications with the server and re-requests validation of your credentials. On a Mac this is not so, Safari will respond to a direct request for validation of your credentials, however it will not re-request that you verify as the server requires. Be sure that prior to selecting the Send button that you copy your work to the clipboard as you will most likely have to restart Safari and log back in. You also will not be able to digitally sign / encrypt / decrypt emails since the S/MIME software is proprietary for Microsoft Internet Explorer (32 bit) only, therefore, it doesn't exist for a Mac.

Internet Explorer Emulation (NOT applicable to OWA): If you visit a website with your Mac that states it can only be accessed via Internet Explorer, or some web pages simply won't work while using your CAC with Safari, try this: Open Safari, Click on the word Safari (in the bar at the top), select Preferences..., Advanced, click the Show Develop menu in the menu bar box. Close Advanced screen. Now to emulate IE, click on the word Develop (at the top), click User Agent, then choose Internet Explorer 9, 10, or 11.

Air Force Users look here for some helpful information

Navy Users look here for some specific information

High Sierra (10.13.x) users, utilize the High Sierra support page
Sierra (10.12.x) users, utilize the Sierra support page
Microsoft
Yosemite (10.10.x) users, utilize the Yosemite support page
Mavericks (10.9.x) users, utilize the Mavericks support page
Mountain Lion(10.8.x) users, utilize the Mountain Lion support page
Lion (10.7.x) users, utilize the Lion support page
Snow Leopard (10.6.x) users, utilize the Snow Leopard support page
Leopard (10.5.x) users, utilize the Leopard support page
Tiger(10.4.x) users, utilize the Tiger support page
OS X 10.11.x (El Capitan) introduced a new feature called SIP which removed root rights to all system files. This means any driver not signed by Apple can not be installed.
IF you need to disable this 'feature' here's how:
1. Reboot the Mac and hold down <Command> + <R> keys simultaneously after you hear the startup chime, this will boot OS X El Capitan into Recovery Mode.
2. When the 'OS X Utilities' screen appears, click on 'Utilities' menu at the top of the screen, and choose 'Terminal.'
3. Type the following command into the Terminal then hit return: csrutil disable; reboot
4. Your computer will restart immediately
You can now install the CAC reader driver(s)
If you'd like to turn SIP back on after installing your driver, repeat the steps above, but use: csrutil enable; reboot instead
More information on SIP can be read at OS X Daily or HowToGeek
If you are still having problems, contactus.