Activating Avast Pro Antivirus with a license file

When you purchase Avast Pro Antivirus, an order confirmation email containing your license file is sent to the email address you provide during the purchase. Follow the steps in this article to activate Avast Pro Antivirus using your license file after installing the software on your PC.

If you have not already installed Avast Pro Antivirus on your PC, refer to the steps in the following article:

If you received an activation code instead of a license file, refer to the following article:

If you are unable to locate your license file, you can request a copy.

Activate Avast Pro Antivirus

To insert your license file into Avast Pro Antivirus automatically, follow the Preferred method instructions. If you encounter an error inserting the file, or prefer to save the file to a specified location on your PC, follow the Alternative method instructions.

  1. Open the Avast confirmation email containing your Avast Pro Antivirus license file.
  2. Download the attached License.avastlic file.
  3. Open the License.avastlic file.
  4. Right-click the attached License.avastlic file to save it.
  5. Select a familiar location to save the file (for example, your desktop) and click Save.
  6. Open the Avast user interface and click Settings.
  7. Select the Subscription tab from the left panel, and click Insert license file according to your user interface:
    • In the Avast Pro Antivirus section:
    • At the top of the Subscription screen:
  8. Locate the License.avastlic file and click Open.
  9. In the Avast Pro Antivirus dialog that appears, click Activate.
  10. Click OK.

To confirm your subscription is active, open the Avast user interface and go to Settings ▸ Subscription. Ensure the text Your subscription is active appears.

  • Avast Pro Antivirus 17.x
  • Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
  • Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1, 32 / 64-bit
  • Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate - Service Pack 2, 32 / 64-bit
  • Microsoft Windows XP Home / Professional / Media Center Edition - Service Pack 3, 32-bit

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