Installations and Updates

Q: What are ClamXAV’s system requirements?

  • ClamXAV 3 requires a Mac running macOS 10.10 (Yosemite) or newer.
  • ClamXAV 2 requires a 64 bit Mac running Mac OS X 10.6.8 to 10.9.5.
  • A subscription to ClamXAV will work on both version 2.19.x and version 3.x.

Q: How do I install ClamXAV?

With a ClamXAV for Home subscription, you can install and activate ClamXAV on up to three Macs in your household. Similarly, ClamXAV’s Family Pack allows you to install and activate ClamXAV on up to nine Macs. But how do you go about installing and activating the app on your additional Macs?


  • You will need to choose the correct version of ClamXAV based on your version of macOS (formerly OS X). If you are using OS X 10.9 (Mavericks) or below, you will need to download ClamXAV 2.

  • If you are using OS X 10.10 (Yosemite) or higher, you will need to use ClamXAV 3.

Q. How do I activate ClamXAV?

After installation, your next step is to activate the app using the details in the order confirmation email you received after purchasing a subscription. We’ve tried to make this process as easy as possible and there are three ways activation can be performed.

Activation Link

Your order confirmation email contains an activation link which will automatically open ClamXAV and activate the app by applying your subscription details. The easiest way to activate the app is to forward this email to the Mac you just installed ClamXAV on and click the activation link within. You will notice that the link differs for versions 2 and 3 of the app.

For ClamXAV 2:

For ClamXAV 3:

Please make sure you use the correct link for the version you have installed.

Registration Key

Besides the activation link, ClamXAV can also be activated using your unique registration key. This key is included in your order confirmation email and resembles the following:


In the event that you can’t locate your order confirmation email, you can make a request for the key to be re-sent by visiting out Lost Key Retrieval page. If you have just installed ClamXAV on an additional Mac, the first time you launch the app you will be greeted with the following screen:

Order Number

ClamXAV can also be activated using the order number from your original order (i.e. not the number generated by a subscription renewal). This can also be found in your order confirmation email. Usually, an order number resembles the following:


Repeat the steps above for activating using a registration key but copy and paste your order number rather than your registration key once the appropriate window is displayed.

Q: I’ve lost my registration key

To retrieve your registration key, please use our Lost Registration Key Retrieval Tool.