Activating Avast Pro Antivirus with a license file

If you purchased Avast Pro Antivirus and received an order confirmation email containing a license file, you need to insert the file to Avast Pro Antivirus to activate the product.

Before following the activation steps in this article, ensure the latest version of Avast Pro Antivirus is installed on your PC. For instructions, refer to the following article:

Activate Avast Pro Antivirus



To activate Avast Pro Antivirus with your license file:

  1. Open your order confirmation email.
  6. Click Use a license file.
  7. Locate the previously saved License.avastlic file and click Open.

Your Avast Pro Antivirus license is now activated. The expiration date of your license appears under Licenses on this PC.


Further recommendations

  • To transfer your license to a different PC, uninstall Avast Pro Antivirus from your PC before you activate your license on the alternative PC. For instructions, refer to the following article:
  • To troubleshoot activation issues, reinstall Avast Pro Antivirus on your PC and activate it again. For instructions, refer to the following article:
  • Avast Pro Antivirus 19.x

Need additional help?

Contact us

Avast Premium Tech Support

Solve any issue
for any device
Call now for free consultation 0800-203-620