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The Definitive Source for Everything CAC

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Mac OS Catalina

Catalina [10.15.x]

Released on 7 October 2019





Between mid October 2019 and mid February 2020 everyone in the Army will be migrated to PIV AUTH certificate for Email access.  You will no longer use your Email certificate for Enterprise Email.


Mac users who upgrade to Mac OS Catalina (10.15.x) need to uninstall all 3rd Party CAC enablers per


If you purchased your Mac with Catalina, you can skip the Macuinstall page, and go directly to the MacNotes page


Unable to sign a PDF using Adobe?

Please verify these settings on your Mac:

Open an Adobe PDF file,

Select the words Adobe Reader [or Acrobat Reader] (at the top of the screen)

Click Preferences

Under Categories, scroll down to Signatures

In the Creation and Appearance section, click More

Make sure Enable CryptoTokenKit framework support is checked.

You also need to change the Default Signing Format from PKCS#7-Detached to CAdES-Equivalent

If you don't see these options, it could be you have an older version of Adobe Reader.  Go to: and update your Adobe Reader


Problems accessing DTS?


You have to use the Safari web browser (Chrome has not worked for anyone)

Select the Show Details (button)

Click the link titled:  visit this website

Click the button that shows:  Visit Website

Enter your computer password, [you are manually adding the web address to your keychain access]. 

Click Update Settings (button)

DTS should now open for you.


I have added some sites I know are having this issue here.  You will only need to double click it and do a manual trust on them. 


Here's How to manually trust the certificate(s): Double click the certificate, select the triangle next to Trust, in the When using this certificate: select Always Trust.



New imageAir Force users who utilize VMware Horizon need to update their client

Here is the link:



Look here for installation steps

You will see in Table 1 that no CAC enablers are compatible with Mac OS Catalina. 



Discounted prices on the programs mentioned below can be viewed here

  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.



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.



Air Force Users look here for some helpful information


Navy Users look here for some specific information


Other versions of Mac OS supported in this website:


Mojave Mojave tiny (10.14.x) users, utilize the Mojave support page

High Sierra Mac OS High Sierra image(10.13.x) users, utilize the High Sierra support page

Sierra Mac OS Sierra (10.12.x) users, utilize the Sierra support page

El Capitan el Capitan(10.11.x) users, utilize the El Capitan support page

Yosemite Yosemite small imae (10.10.x) users, utilize the Yosemite support page

Mavericks Mavericks logo (10.9.x) users, utilize the Mavericks support page

Mountain LionOS X Mountain Lion logo(10.8.x) users, utilize the Mountain Lion support page

Lion Apple Lion logo (10.7.x) users, utilize the Lion support page

Snow Leopard Apple Snow Leopard logo (10.6.x) users, utilize the Snow Leopard support page

Leopard Apple Leopard logo (10.5.x) users, utilize the Leopard support page

TigerApple Tiger logo(10.4.x) users, utilize the Tiger support page


If you are still having problems, contact us.


 If you have questions or suggestions for this site, contact Michael J. Danberry

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Last Update or Review:  Friday, 27 March 2020 11:21 hrs


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