- Obtain the latest version of ClamXav from our downloads page or from the following link: ClamXav Latest Version.
- Double click "ClamXav_2.9_xxx.zip" in your downloads folder to expand it into "ClamXav.app" (your web browser may have already performed this step for you).
- Double click ClamXav.app to start the installation.
If this is your first time running ClamXav (or if you're copying it onto a new computer), you'll be presented with the End User Licence Agreement. You must read and confirm your agreement with the document before being able to use ClamXav.
Because ClamXav is available with a 30 day free trial, you will be shown a dialog box telling you how many days are left in your trial. If you have already purchased a licence for ClamXav, click the "Enter Registration" button and then either copy & paste the details from your registration email, or preferably click the link in your registration email to enter your registration key automatically.
If you have misplaced the email with your registration details, we can resend it to you via the Retrieve Lost Registration Key item in the Support menu at the top of this page.
Enter your admin name and password when prompted to install the helper tool - this is the same name and password that you use to log into your computer, it is not something specific to ClamXav.
At this point, you may be prompted to install or update the anti-virus scanning engine. If so, click "Install" and wait for the installation to complete. It should only take a few moments.
Lastly, click "Update Now" when prompted to download the latest virus definitions.
If you previously downloaded ClamXav from the Mac App Store, please understand that it is no longer available in the App Store, so it's not possible to update automatically to the new ClamXav. Please drag your existing ClamXav.app to the trash, and follow the instructions above to install from scratch.
If you downloaded ClamXav through this website, double click your existing ClamXav.app and go to the ClamXav menu, then select "Check for ClamXav Updates…" and follow the prompts to complete the installation.