Here's how to install Avast Ultimate (Multi-Device)

Includes Premium Security, Cleanup Premium, and SecureLine VPN as a bundle for up to 10 devices.

  1. Click the button below to start downloading the installation file. Download Avast Premium Security
  2. Once the download is finished, open the avast_premium_security_setup_online.exe file (by default, downloaded files are saved to your Downloads folder).
  3. Click Install and follow the on-screen instructions to complete the installation process.
    See detailed installation instructions
  4. Click the text box below to copy your activation code.
  5. Double-click the Avast Premium Security icon on your desktop to open the application, then go to Menu and select My Subscriptions.
  6. Select Enter a valid activation code, paste your activation code into the text box by pressing the Ctrl and V keys simultaneously, and click Enter.
    See detailed activation instructions
  7. Select Enter a valid activation code, type the activation code you received with the product into the text box, and click Enter (if asked, enter your name, email, and postal code).
    See detailed activation instructions
  8. On the My Subscriptions screen, ensure that all products for the recently activated subscription are listed as Active under Subscriptions on this PC. If any products included in this subscription appear under Other available subscriptions, click Activate & Install next to the missing product.
  9. That's it! Don't forget about installation on other devices.
  1. Click the button below to start downloading the installation file. Download Avast Security
  2. Once the download is finished, open the avast_security_online.dmg file (by default, downloaded files are saved to your Downloads folder).
  3. Double-click Install Avast Security and follow the on-screen instructions to complete the installation process.
    See detailed installation instructions
  4. Click the text box below to copy your activation code.
  5. In your Applications folder, double-click the Avast Security icon to open the application, then go to Menu and select My Subscriptions.
  6. Paste your activation code into the text box, and click Activate.
    See detailed activation instructions
  7. Type the activation code you received with the product into the text box, and click Activate (if asked, enter your name, email, and postal code).
    See detailed activation instructions
  8. On the list under Subscriptions on this Mac, click Activate next to each product for the recently activated subscription, and wait until the installation is complete (if asked for system permissions, enter your Mac account credentials to continue).
  9. To open the application, double-click the Avast Security icon in your Applications folder.
  10. That's it! Don't forget about installation on other devices.

Install Avast Mobile Security Premium

  1. Tap the button below to open the product page in Google Play Store. Go to Google Play Store
  2. Tap Install to download and install the app.
  3. Tap the text box below to copy your activation code.
  4. On your Home screen, tap the Avast Mobile Security icon to open the app, and select Upgrade Now (if you switched to a free version with ads, tap Upgrade in the top-right corner of the screen).
  5. Tap the menu icon in the top-right corner of the screen, and select Enter voucher code.
  6. Paste your activation code into the text box, and tap Confirm.
    See detailed activation instructions
  7. Type the activation code you received with the product into the text box, and tap Confirm (if asked, enter your name, email, and postal code).
    See detailed activation instructions
  8. To open the app, tap the Avast Mobile Security icon on your Home screen.

Install Avast Cleanup Pro

  1. Tap the button below to open the product page in Google Play Store. Go to Google Play Store
  2. Tap Install to download and install the app.
  3. Tap the text box below to copy your activation code.
  4. On your Home screen, tap the Avast Cleanup icon to open the app, tap the menu icon in the top-right corner of the screen, and select Enter voucher code (if you switched to a free version with ads, tap Upgrade in the top-right corner of the screen).
  5. Paste your activation code into the text box, and tap Confirm.
    See detailed activation instructions
  6. Type the activation code you received with the product into the text box, and tap Confirm (if asked, enter your name, email, and postal code).
    See detailed activation instructions
  7. To open the app, tap the Avast Cleanup icon on your Home screen.

Install Avast SecureLine VPN

  1. Tap the button below to open the product page in Google Play Store. Go to Google Play Store
  2. Tap Install to download and install the app.
  3. Tap the text box below to copy your activation code.
  4. On your Home screen, tap the Avast SecureLine icon to open the app, tap the menu icon in the top-right corner of the screen, and select Already Purchased? (if you switched to a free version with ads, tap Upgrade in the top-left corner of the screen, and select Already Purchased?).
  5. Select Use voucher, paste your activation code into the text box, and tap Continue.
    See detailed activation instructions
  6. Select Use voucher, type the activation code you received with the product into the text box, and tap Continue (if asked, enter your name, email, and postal code).
    See detailed activation instructions
  7. To open the app, tap the Avast SecureLine icon on your Home screen.
  1. That's it! Don't forget about installation on other devices.

Install Avast Mobile Security Premium

  1. Tap the button below to open the product page in App Store. Go to App Store
  2. Tap Get (or the cloud icon) to download and install the app.
  3. Tap the text box below to copy your activation code.
  4. On your Home screen, tap the Security icon to open the app, and select Not now.
  5. Tap Upgrade in the top-right corner of the screen, and select Already purchased?.
  6. Select Enter Avast subscription code, paste your activation code into the text box, and tap OK.
    See detailed activation instructions
  7. Select Enter Avast subscription code, type the activation code you received with the product into the text box, and tap OK (if asked, enter your name, email, and postal code).
    See detailed activation instructions
  8. To open the app, tap the Security icon on your Home screen.

Install Avast SecureLine VPN

  1. Tap the button below to open the product page in App Store. Go to App Store
  2. Tap Get (or the cloud icon) to download and install the app.
  3. Tap the text box below to copy your activation code.
  4. On your Home screen, tap the SecureLine icon to open the app, scroll down the screen, and select Already Purchased?.
  5. Select Enter Avast subscription code, paste your activation code into the text box, and tap Continue.
    See detailed activation instructions
  6. Select Enter Avast subscription code, type the activation code you received with the product into the text box, and tap Continue (if asked, enter your name, email, and postal code).
    See detailed activation instructions
  7. To open the app, tap the SecureLine icon on your Home screen.
  1. That's it! Don't forget about installation on other devices.