Avast One - FAQs

Avast One Free is currently available only in Australia. To learn more about Avast Free Antivirus, refer to the following article:


What is Avast One?

Avast One is an all-in-one security application for your Windows PC. It includes the following features:

  • Comprehensive Avast Antivirus protection.
  • Access to Virtual Private Network (VPN).
  • Dark web monitoring that alerts you if any of your passwords are leaked online.
  • Tools to help you prevent online tracking.
  • Tools designed to improve the speed of your PC.

For a full list of Avast One features, refer to the Features and Premium features sections of this article.

What is the difference between Avast One and Avast One Free?

Avast One Free includes comprehensive Avast Antivirus protection, and limited access to Secure connection (VPN) and Data leak monitoring.

Avast One includes all the features from Avast One Free, unlimited Secure connection (VPN) access and Data leak monitoring, and additional features such as Sensitive Data Shield, Fraudulent site detection, and App optimizer.

How does Avast One protect my PC?

Avast One includes features such as Real-time file scanning, Web Shield, and Firewall. When these features are enabled, Avast One Free works continuously to detect potentially malicious files, websites, and networks from interacting with and infecting your PC.

How does Avast One keep my data private?

When you use features such as Secure connection, Data leak monitoring, and Browser clean-up, Avast One monitors your connections and data to keep your private information safe.

How does Avast One boost the performance of my PC?

Avast One includes features such as Disk Cleaner and Software Updater. When you use these tools regularly, they can enhance your PC's performance, clear disk space, and eliminate unwanted programs and security risks.

How will the release of Avast One affect Avast Premium Security?

For now, Avast Premium Security will continue to receive virus definition updates and application updates as normal.

Can I use my subscription on multiple devices and platforms?

Avast One is currently only available on Windows PC. The following Avast One subscription types are available:

  • Individual: protects up to 5 devices simultaneously.
  • Family: protects up to 30 devices simultaneously. An Avast One Family subscription also includes the Family Sharing feature (available via your Avast Account), which allows you to share your subscription with up to 5 other people. To learn more about Family Sharing in Avast One, refer to the following article:

Download and Installation

What are the system requirements for Avast One?

  • 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 SP2 or higher, 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 program updates and antivirus database.
  • Optimally standard screen resolution no less than 1024 x 768 pixels.
Avast One is not supported (is not compatible, cannot be installed, and will not run) on DOS, Microsoft Windows editions earlier than Windows 7, Microsoft Windows Server operating systems, or any others not specified as supported.

Do I need to uninstall previous Avast products before I install Avast One?

No. If you already have an Avast Antivirus application installed on your PC, you are prompted to upgrade to Avast One. If you have separate, paid subscriptions for other standalone Avast products, you can continue using them without interruption.

How do I install Avast One?

To install Avast One or Avast One Free, refer to the following articles:

Subscription and activation

How do I activate Avast One?

To activate Avast One, refer to the following article:

After you install Avast One Free, your subscription activates automatically.

Can I transfer a subscription to another device?

You can activate an Avast One (Individual) subscription on up to 5 devices simultaneously, or an Avast One (Family) subscription on up to 30 devices simultaneously. Check your Avast Account or order confirmation email to confirm which subscription type you purchased. To transfer a subscription to another Windows PC, follow the steps below:

  1. Uninstall Avast One from your Windows PC.
  2. Install Avast One on your new Windows PC.
  3. Activate Avast One on your new Windows PC.


What is Real-time file scanning?

Real-time file scanning scans programs and files saved on your PC for malicious threats in real-time before allowing them to be opened, run, modified, or saved. If malware is detected, Real-time file scanning prevents the program or file from infecting your PC.

What is Web Shield?

Web Shield scans data that is transferred when you browse the internet in real time to prevent malware, such as malicious scripts, from being downloaded and run on your PC. Web Shield can also block websites, enable https scanning, and protect against botnets designed to hack your data or remotely control your PC. You can also enable Web Shield to change your digital fingerprint automatically while you browse the internet, by going to Device protectionWeb Shield, then ensuring the box next to Anti-fingerprinting is ticked.

What is Ransomware Shield?

Ransomware Shield secures your personal photos, documents, and files from being modified, deleted, or encrypted by ransomware attacks. This feature scans for and automatically secures folders that may contain personal data, and allows you to specify other folders you want to protect from untrusted applications. Additionally, you can specify which applications are allowed to modify the files in your folders and which applications are always blocked.

For more information, refer to the following article:

What is Firewall?

Firewall monitors all network traffic between your PC and the outside world to protect you from unauthorized communication and intrusions. Firewall prevents sensitive data from leaving your PC and can block hacking attempts.

You can also block network and internet communication for specific applications. Firewall then blocks connection whenever the particular applications try to establish a connection to the internet or with another network.

For more information, refer to the following article:

What is Virus Vault?

Virus Vault is an isolated space where you can safely store potentially dangerous files, or send them to Avast Threat Labs for analysis. Files in Virus Vault cannot run or access your system and data, so any malicious code contained within a file is unable to harm your PC.

What is Smart Scan?

Smart Scan is a comprehensive scan that detects the following issues on your PC:

  • Viruses: files containing malicious code that may impact the security and performance of your PC.
  • Vulnerable software: out-of-date software that hackers can use to access your system.
  • Bad browser add-ons: browser extensions that are usually installed without your knowledge and affect the performance of your system.
  • Poor search engines: default search providers that may offer poor search results or endanger your privacy.
  • Network issues: vulnerabilities in your network that may lead to attacks on your router and network devices.
  • Performance issues: items such as junk files and unnecessary apps, or settings issues that may interfere with the operation of your PC.

Can I exclude files, folders, or websites from scanning?

Yes. You can exclude specific files, folders, and websites from being scanned by all Avast shields and scans. To set an exclusion:

  1. Go to MeSettingsExceptions.
  2. Click Add Exception.
  3. Type a file path, folder path, or URL, then click Add Exception. Alternatively, click Browse, select a file or folder path, and click OK.

Your specified file, folder, or website is now listed on the Exceptions screen. To remove an exception, hover the cursor over the listed exception, then click the trash icon that appears.

Does Avast One scan webmail accounts?

If you use a web-based email account, such as Yahoo or Gmail, Avast does not directly scan your emails. However, Web Shield and Real-time file scanning actively protect your PC from malware that could be contained in your email messages.

What is Browser clean-up?

Browser clean-up is a feature integrated into Smart Scan.

When you run Smart Scan, Avast scans your PC for various elements, including poorly rated browser add-ons. If such add-ons are detected, you can follow the on-screen instructions to remove them. You can also remove cached browser data from the Browser clean-up screen anytime.

What is Secure connection?

Secure connection is the method that a Virtual Private Network (VPN) uses to connect to the internet. A VPN functions as a private tunnel through the internet, which encrypts your data and secures your connection when using public Wi-Fi networks, such as those in cafes or airports. Avast One VPN has servers in several locations, which means you can bypass geolocation restrictions and access your favorite content while traveling.

Secure connection is included in Avast One Free, but changing your default location requires a paid subscription.

What is Data leak monitoring?

Data leak monitoring is an advanced privacy feature that prevents your personal data from being exploited for profit, and alerts you if your information is leaked online.

To use Data leak monitoring, enter the email address you want to monitor, then click Check for breaches.

Data leak monitoring is included in Avast One Free, but checking for data breaches with more than one email address requires a paid subscription.

What is Disk Cleaner?

Disk Cleaner scans for and safely deletes files that may be using a large amount of disk space on your PC. To delete junk, select the files types you want to scan, and click Clean.

What is Software Updater?

Software Updater keeps common third-party software up to date to eliminate potential security risks. Malicious threats or attackers often use leaks in outdated software to access your PC. Software Updater displays the most popular programs installed on your PC and allows you to easily update all outdated software.

Premium features

What is Sensitive Data Shield?

Sensitive Data Shield scans and protects your sensitive personal documents against unauthorized access and malware. The files considered sensitive contain your personal information that, if revealed, could compromise your privacy and identity. Sensitive Data Shield controls which applications and users have access to your files to secure your private data.

For more information, refer to the following article:

What is Fraudulent site detection?

Fraudulent site detection secures you against DNS (Domain Name System) hijacking. Some malicious programs can stealthily redirect you from an authentic URL to an inauthentic website to acquire sensitive information such as usernames, passwords, or credit card details.

Every time you enter the URL (address) of a website, such as www.example.com, into the address bar of your browser, the URL is translated to the IP address (Internet Protocol address) of the web server where the web page you want to access is stored. Fraudulent site detection provides an encrypted connection between your web browser and Avast's own DNS server to ensure that the displayed website is the authentic one.

What is Webcam Shield?

Webcam Shield prevents applications and malware from accessing your PC's webcam without your consent. With Webcam Shield enabled, untrusted applications cannot capture images or videos and send the content outside of your PC to compromise your privacy.

For more information, refer to the following article:

What is App Optimizer?

App Optimizer scans for applications that are running in the background of your PC, and allows you to safely put them to sleep. This improves the performance of your PC, and reserves its resources for the applications you choose to run.


How do I uninstall Avast One?

For detailed uninstallation instructions, refer to the following article:

What should I do if Avast One does not accept my purchased subscription?

If you are unable to activate Avast One, check that you haven't exceeded the device limit according to the Avast One subscription you have in your Avast Account, then try to activate the application again. If activation is unsuccessful, follow these troubleshooting steps:

  1. Uninstall Avast One and restart your computer.
  2. Download and install Avast One.
  3. Try to activate Avast One again.

Can I get a copy of my purchased subscription?

You can always find your current subscriptions and download the latest product versions via your Avast Account. For more information, refer to the following article:

Can I temporarily disable Avast One protection?

Yes, but we do not recommend doing this permanently. If you need to disable the real-time protection components in Avast One temporarily, right click the Avast icon in the system tray and select Avast shields control. The following options are available:

  • Disable for 10 minutes
  • Disable for 1 hour
  • Disable until computer is restarted
  • Disable permanently (not recommended)

Why can't I download and install Avast One?

Currently, Avast One is only available for download in Australia.

How do I cancel my Avast subscription?

For detailed instructions, refer to the following article:

  • Avast One 20.x for Windows
  • Avast One Free 20.x for Windows
  • 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 2, 32 / 64-bit

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