Installing Avast One Free

Avast One Free is currently available only in Australia. To install Avast Free Antivirus or Avast Mobile Security instead, refer to the relevant article below:

Avast One Free is an all-in-one security and optimization tool that blocks viruses, spyware, and other malicious threats. Additionally, it protects you and your data from hackers while you are online, and improves the performance of your system.

Avast One is available as both a free and paid product. This article explains how to install the free version of the app.

Install Avast One Free

  1. Click the button below to download the Avast One Free setup file, and save it to a familiar location on your PC (by default, downloaded files are saved to your Downloads folder).
    Download Avast One Free
  2. Right-click the downloaded setup file avast_free_setup_online.exe and select Run as administrator from the context menu.
If you are unable to authorize installation of Avast One Free, refer to the following article for advice:
  1. If prompted for permission by the User Account Control dialog, click Yes.
  2. Click Install Now.
  3. Wait while setup installs Avast One Free on your PC.
  4. Click Get Started, then follow the on-screen instructions to complete Avast One Free installation.
  5. When installation is complete, answer the five-question survey to personalize your initial Smart Scan. To skip the survey, click Skip all.
  6. Click Start Your First Scan to start scanning for vulnerabilities on your PC.
  7. Follow the on-screen instructions to resolve each found issue. To skip ahead and explore other Avast One Free features, click Skip for now.

Avast One Free is now installed, but some components may not fully function until you restart your PC.

Troubleshooting

If you experience any installation issues:

  1. Ensure your PC meets the minimum system requirements and your Windows version is up to date.
  • Windows 10 except Mobile and IoT Edition (32 or 64-bit); Windows 8/8.1 except RT and Starter Edition (32 or 64-bit); Windows 7 SP1 with Convenient Rollup Update or later, any Edition (32 or 64-bit)
  • Windows fully compatible PC with Intel Pentium 4 / AMD Athlon 64 processor or above (must support SSE2 instructions); ARM-based devices are not supported
  • 1 GB RAM or above
  • 2 GB free space on the hard disk
  • Internet connection to download, activate, and maintain application updates and the antivirus database
  • Optimally standard screen resolution no less than 1024 x 768 pixels
  1. Check that the downloaded setup file is not corrupted. For instructions, refer to the following article:
  2. Uninstall any previous antivirus software from your PC. For instructions, refer to the following articles:
  3. Restart your PC, then try to install Avast One Free again by following the steps in this article.
  4. If the issue persists, contact Avast Support and provide your setup log file. For instructions, refer to the following article:

Further recommendations

To learn more about Avast One Free, refer to the following article:

For instructions on how to use Avast One Free, refer to the following article:

Avast One Free is an all-in-one security and optimization tool that blocks viruses and other malicious threats. Additionally, it protects you and your data online, and boosts the performance of your device.

Avast One is available as both a free and paid product. This article explains how to install the free version of the app.

Install Avast One Free

  1. On your Android device, tap the button below to open the Avast One product page in Google Play Store.
    Go to Google Play Store
  2. Tap Install to download and install the app. When installation is complete, tap Open.
  3. Tap Get Started.
  4. Tap Continue.
  5. Select Run Smart Scan, then wait while Avast One Free scans your device for vulnerabilities.
  6. Tap Resolve under each found vulnerability to begin protecting your device. Alternatively, select Ignore all issues to continue to the main Avast One Free screen.

Avast One Free is now installed on your Android device.

Optionally, tap Upgrade in the top-right of the main Avast One screen to upgrade to the paid version of the app. For detailed instructions, refer to the following article section:

To activate a paid Avast One subscription, refer to the following article:

Troubleshooting

If you experience any installation issues, ensure your Android device meets the minimum system requirements.

  • Google Android 5.0 (Lollipop, API 21) or later
  • Internet connection to download, activate, and maintain app updates

If the issue persists, contact Avast Support.

Further recommendations

To learn more about the features available in Avast One Free, refer to the following article:

For instructions on how to use Avast One Free, refer to the following article:

Avast One is an all-in-one security and privacy tool that blocks viruses and other malicious threats. Additionally, it protects you and your data online.

Avast One is available as both a free and paid product. This article explains how to install the free version of the app.

Install Avast One

  1. On your iOS device, tap the button below to open the App Store.
    Go to the App Store
  2. Tap Get to download and install the app. When installation is complete, tap Open.
  3. Tap Start Using Avast One.
  4. Select Smart Scan, then wait while Avast One scans your device for vulnerabilities.
  5. Tap each issue to resolve it and begin protecting your device. Alternatively, tap the X icon to continue to the main Avast One screen.

Avast One is now installed on your iOS device.

Optionally, tap Upgrade in the top-left of the main Avast One screen to upgrade to the paid version of the app. For detailed instructions, refer to the following article section:

To activate a paid Avast One subscription, refer to the following article:

Troubleshooting

If you experience any installation issues, ensure your iOS device meets the minimum system requirements.

  • Apple iOS 13.0 or later
  • Internet connection to download, activate, and maintain app updates

If the issue persists, contact Avast Support.

Further recommendations

To learn more about the features available in Avast One, refer to the following article:

For instructions on how to use Avast One, refer to the following article:

  • Avast One Free 21.x for Windows
  • Avast One Free 1.x for Android
  • Avast One Free 1.x for iOS
  • 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 with Convenient Rollup Update, 32 / 64-bit
     
  • Google Android 5.0 (Lollipop, API 21) or later
     
  • Apple iOS 13.0 or later

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