When you purchase Avast Premium Security (previously Avast Security Pro), you need to manually activate your subscription using either a valid activation code or by logging into your Avast Account.
Activate Avast Premium Security for Mac
Your activation code can be located in a number of different places depending on your purchase method. For example, in an order confirmation email, on an activation card, or within another Avast product. For instructions on how to locate your activation code, refer to the following article:
To activate Avast Premium Security with an activation code:
- After installing Avast Security, click Activate paid features.
Alternatively, double-click the 
Avast icon in your Applications folder, then go to ☰ Menu ▸ Activate paid features. 
- Click in the text box, then type or paste in your activation code, and click Activate.
To activate Avast Premium Security with an Avast Account:
- After installing Avast Security, click Activate paid features. Alternatively, double-click the Avast icon in your Applications folder, then go to ☰ Menu ▸ Log in to Avast account.
- Enter your Avast Account email and password, then click Log In. Alternatively, click Facebook or Google to log in using these credentials instead.
Your Avast Premium Security subscription is now activated.
Further recommendations
To transfer your subscription to a different Mac, uninstall Avast Premium Security from your Mac before you activate your subscription on the alternative Mac. For reinstallation instructions, refer to the following articles:
Troubleshoot activation issues
In some cases, subscription synchronization may take up to 24 hours after purchase. If your subscription is still not active after this time, refer to the following article:
- Avast Premium Security 14.x for Mac
- Apple macOS 10.14.x (Mojave)
- Apple macOS 10.13.x (High Sierra)
- Apple macOS 10.12.x (Sierra)
- Apple Mac OS X 10.11.x (El Capitan)
- Apple Mac OS X 10.10.x (Yosemite)