Avast One is an all-in-one digital guardian that allows you to access and manage multiple Avast applications. It is designed to simplify your experience by consolidating various security, privacy, and performance tools into one customizable platform.
Through Avast One, you can install the following apps:
- Avast Antivirus (a free version is included in Avast One by default)
- Avast SecureLine VPN
- Avast BreachGuard
- Avast Cleanup
- Avast Driver Updater
- Avast AntiTrack
- Avast Secure Identity
- Avast Secure Browser
After purchasing one of these subscriptions, you need to install Avast One, then activate your app through it. Avast One is currently compatible with Windows and Mac and you can install and use your subscriptions on a number of devices specified during the purchase.
Installing Avast One
To install Avast One, follow the steps below:
- Click the button below to download the latest version of Avast One for Windows:
Download Avast One for Windows - Once the download is finished, open the
avast_one_free_antivirus.exefile (by default, downloaded files are saved to your Downloads folder). - Click Install and follow the on-screen instructions to complete the installation process. For detailed instructions visit the following article: Installing Avast One.
For detailed instructions visit the following article: Once Avast One is installed, you can activate your Avast apps through it by either by signing in to the application with your Avast Account credentials or by entering a valid activation code.
- Click the button below to download the Avast One setup file, and save it to a familiar location on your Mac (by default, downloaded files are saved to your Downloads folder).
Download Avast One for Mac - Double-click the downloaded setup file
avast_one_online.dmg. - Double-click the Avast One icon.
- In the new window, click Allow.
- Click Continue to confirm that you accept the Avast Privacy Policy.
- Click Continue to confirm that you have read the End User License Agreement, then click Agree to confirm that you accept the terms.
- Select the users who should have access to Avast One, then click Continue.
- Click Install to proceed with default installation. Alternatively, click Change Install Location... if you want to make changes to the default setup.
- Enter the password that you use when you start your Mac, then click Install Software. If prompted, enter this password again, and click Update Settings.
- When the System Extension Blocked notification appears, click OK.
- Click Close ▸ Move to Trash.
- Click Continue.
- Click Open, then follow the on-screen instructions to allow permissions for Avast One. For detailed instructions, refer to the following article:
- Click Got it.
Once Avast One is installed, you can activate your Avast apps through it by either by signing in to the application with your Avast Account credentials or by entering a valid activation code.
Activate Avast One apps
To activate premium features in Avast One, you can choose from three available methods: signing in with an Avast Account linked to a valid subscription, using a one-time passcode, or entering an activation code. This article provides instructions for each activation method.
Activate via Avast Account
To activate premium features in Avast One using an Avast Account:
- Open Avast One, hover your cursor over the left panel and click Account.
- Select Sign in.
- Enter the email address associated with your Avast Account, then click Continue.
- Enter the password associated with your Avast Account, then click Sign In.
- All apps associated with your Avast Account are installed and activated automatically.
Avast One is now active. To view your subscription details, hover your cursor over the left panel and click Account. The renewal date or the expiration date of your subscription appear under Active subscriptions. You can activate your app on the number of devices you specified when making the purchase.
If activation is unsuccessful, refer to the Troubleshoot activation issues section below.
Activate via one-time passcode
To activate premium features in Avast One using a one-time passcode:
- Open Avast One, hover your cursor over the left panel and click Account.
- Select Sign in.
- Click Request one-time passcode.
- Enter the email address associated with your Avast Account, then click Continue. An email containing a temporary passcode is sent to the email address you provided.
- Enter the passcode you received in your email inbox, then click Verify.
- All apps associated with your Avast Account are installed and activated automatically.
Avast One is now active. To view your subscription details, hover your cursor over the left panel and click Account. The renewal date or the expiration date of your subscription appear under Active subscriptions. You can activate your app on the number of devices you specified when making the purchase.
If activation is unsuccessful, refer to the Troubleshoot activation issues section below.
Activate via activation code
To activate premium features in Avast One using an activation code:
- Open Avast One, hover your cursor over the left panel and click Account.
- Click Enter activation code.
- Type or paste your activation code (including hyphens) into the text box, then click Next twice.
- All apps associated with your activation code are installed and activated automatically.
Avast One is now active. To view your subscription details, hover your cursor over the left panel and click Account. The renewal date or the expiration date of your subscription appear under Active subscriptions. You can activate your app on the number of devices you specified when making the purchase.
If activation is unsuccessful, refer to the Troubleshoot activation issues section below.
Activate via Avast Account
To activate premium features in Avast One using an Avast Account:
- Open Avast One, then go to
☰Menu ▸ Sign in. - Enter the email address associated with your Avast Account, then click Continue.
- Enter the password associated with your Avast Account, then click Sign In.
- All apps associated with your Avast Account are installed and activated automatically.
Avast One is now active. To view your subscription details, go to ☰ Menu ▸ My subscriptions. The renewal date or the expiration date of your subscription appear under Active subscriptions. You can activate your app on the number of devices you specified when making the purchase.
If activation is unsuccessful, refer to the Troubleshoot activation issues section below.
Activate via one-time passcode
To activate premium features in Avast One using a one-time passcode:
- Open Avast One, then go to
☰Menu ▸ Sign in. - Click Request one-time passcode.
- Enter the email address associated with your Avast Account, then click Continue. An email containing a temporary passcode is sent to the email address you provided.
- Enter the passcode you received in your email inbox, then click Verify.
- All apps associated with your Avast Account are installed and activated automatically.
Avast One is now active. To view your subscription details, go to ☰ Menu ▸ My subscriptions. The renewal date or the expiration date of your subscription appear under Active subscriptions. You can activate your app on the number of devices you specified when making the purchase.
If activation is unsuccessful, refer to the Troubleshoot activation issues section below.
Activate via activation code
To activate premium features in Avast One using an activation code:
- Open Avast One, then go to
☰Menu ▸ My subscriptions. - Click Enter activation code.
- Type or paste your activation code (including hyphens) into the text box, then click Next twice.
- All apps associated with your activation code are installed and activated automatically.
Avast One is now active. To view your subscription details, go to ☰ Menu ▸ My subscriptions. The renewal date or the expiration date of your subscription appear under Active subscriptions. You can activate your app on the number of devices you specified when making the purchase.
If activation is unsuccessful, refer to the Troubleshoot activation issues section below.
Troubleshoot activation issues
If you experience activation issues, review the information below, which explains how to resolve some of the most common activation issues.
- Avast One
- Windows and macOS
Updated on: 22/10/2025
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