utilizing an Intel chip.  If you have the new M1 chip, please look here for support

Big Sur [11.x]

Released on 12 November 2020

I have Mac OS Big Sur on an Intel based Mac, and am able to access CAC enabled websites using the native smart card, and adding the DoD certificates from step 5 on https://militarycac.com/macnotes.htm 

 Mac OS 11.xx.x would not read the "G+D FIPS 201 SCE 7.0" CAC with the SCR-3310 v2.0 reader with firmware Version below 6.02.  So, if your reader is below 6.02, you may need to purchase a new reader.

If you are having problems unlocking your settings in System Preferences due to it not accepting your administrator password or your CAC seemed to have stopped working after upgrading to Big Sur, please verify if your Mac has a T2 Security Chip.  If your computer does, then reset your SMC (System Management Control) by powering down your computer, then holding the power button for 10 seconds.  Then turn your computer on, you've just reset your SMC.  This information was found at:  https://support.apple.com/en-us/HT203127.

I ordered a new Mac on 12 November 2020 with the non Intel chip (M1) my findings from this computer can be seen on this page.  My only "fear" with the new chip is compatibility with Virtual Machines (running Windows for certain DoD websites)

Mac users who upgraded to Mac OS Big Sur (11.xx) need to uninstall all 3rd Party CAC enablers per https://militarycac.com/macuninstall.htm

If you purchased your Mac with Big Sur (Intel chip), you can skip the Macuninstall page, and go directly to the MacNotes page

 How 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

Close Adobe Reader

Double click an Adobe PDF file you need to sign

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 can download the certificates you need.  Then 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.

Air Force and Coast Guard users who utilize VMware Horizon need to update their client

Here is the link:

https://my.vmware.com/web/vmware/downloads/details?downloadGroup=CART21FQ1_MAC_543&productId=863&rPId=44670

Look here for installation steps

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

Discounted prices on the programs mentioned below can be viewed here

Virtual Machine information

* In the VirtualBox Graphical User Interface (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:

Ventura  (13.x) users, utilize the Ventura support page

Big Sur (11.x) users with M1 chip, utilize the Big Sur support page

Catalina (10.15.x) users, utilize the Catalina support page

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

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

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

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

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

If you are still having problems, contact us