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Common Access Card help for your
Personal Computer

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(Everyone other than Coast Guard look here)

Installation Steps

Step 1: Obtain a CAC Reader
Step 2: CAC Reader driver | Video
Step 3: DoD Certificates | Video
Step 4: ActivClient
Step 4a: Update ActivClient
Step 5:  IE adjustments | Video
Log into a CAC enabled webpage now to test

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The Coast Guard download site below requires you to login with your CAC first


Windows 8 users click here for information on how to use your CAC on your computer.

DO NOT follow instructions below



Download ActivClient from the Coast Guard Portal:

NOTE:  Requires CAC login from your work computer


ActivClient 6.2 software update


There is a fix for the 144 CAC card not working on your computer.  Contact your IT support and have TISCOM tech bulletin 341 run on your machine.  This will install ActivClient 6.2.  Afterwards, you will log back on to the computer, open Internet Explorer go to tools->Internet Options->Content->Certificates -- highlight all the certificates in the personal tab and delete them, Reboot the computer. 


Other CAC use options:



Is your CAC a "Gemalto TOP DL GX4 144", "Gemalto DLGX4-A 144", or "Oberthur ID One 128 v5.5 Dual", you "may" be able to use your CAC without needing to install ActivClient. 

Another guide to help figure out which CAC you have

Read more about the older CACs and replacing them

gemalto 144 CAC image GemaltoDLGX4-A 144 imageOberthur 5.5 CAC image


If you are unsure whether you have a 32 or 64 bit version, here is how to find out:


Windows 7, & Vista, Right click Computer, select Properties.  Under System, System type you will see 32 or 64-bit. 
XP, Right click My Computer, select Properties.  If it doesn't say 64 bit, you have a 32 bit Operating System.


Here are more options for you (if the above don't work)




 If you have questions or suggestions for this site, contact Michael J. Danberry
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Last Update or Review:  Sunday, 15 February 2015 11:25 hrs


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