Quarantine - Getting Started

Quarantine is a safe place in Avast Antivirus for storing potentially harmful files and completely isolating them from the rest of your operating system. Files inside Quarantine cannot be accessed or run by any outside processes, software applications, or viruses.

By default, files are moved to Quarantine in the following ways:

  • If you run a predefined Avast Antivirus scan and it detects a suspicious file.
  • If an active Avast Antivirus shield detects a suspicious file.

Alternatively, you can move files into Quarantine manually.

Access Quarantine

Access Quarantine in one of the following ways:

  • Open Avast Antivirus, then go to ProtectionQuarantine.
  • In the notification area, right-click the Avast icon and select Quarantine.

Move files to Quarantine

Avast Antivirus automatically moves malicious files to Quarantine if they cannot be repaired.

You can customize the default actions in the individual settings for each antivirus scan or shield. For more information, refer to the following articles:

To manually add files to Quarantine:

  1. On the Quarantine screen, click Add file....
  2. Locate the file you want to move to Quarantine, and click Open.

The file now appears in Quarantine and can be sent for analysis.

Restore files from Quarantine

Restoring files from Quarantine poses a high security risk. This action requires advanced user knowledge and is only intended for specific situations (for example, if a critical system file is accidentally moved to Quarantine).

To move a file out of Quarantine:

  1. Tick the box next to the relevant file in Quarantine.
  2. Click More options (three dots), then select an action:
    • Restore: moves the file to its original location on your PC.
    • Restore and add exception: moves the file to its original location, and adds the file to your exceptions list to exclude it from all Avast Antivirus scans and shields. To view your exceptions list, go to MenuSettingsGeneralExceptions.
    • Extract: moves the file to a chosen location on your PC.
  3. Click Close.

Submit files to Avast Threat Labs

To ensure your PC stays protected, send files to Avast Threat Labs for further analysis. We recommend sending the following file types:

  • Potential malware: files that Avast Antivirus has not identified as malware, but you believe may be malicious.
  • False positive: files that Avast Antivirus has identified as malware, but you believe may be clean.

To submit a file to Avast Threat Labs:

  1. Tick the box next to the relevant file in Quarantine.
  2. Click More options (three dots), then select Send for analysis.
  3. Select either Potential malware or False positive and enter any additional information about the file into the text box, then click Send.
  4. Click Close.

The file is submitted to Avast Threat Labs for further testing. In most cases, Avast Threat Labs processes the files they receive without sending a response to you.

Delete files from Quarantine

This action permanently deletes files from your PC and cannot be undone.
  1. Tick the box next to the relevant file in Quarantine.
  2. Click Delete all at the bottom of the Quarantine screen.
  3. Click Yes, delete to confirm.

Manage Quarantine settings

By default, Quarantine is allocated a maximum space of 5120 MB, which you can change in Quarantine settings. To configure Quarantine space allocation:

  1. Open Avast Antivirus, then go to ProtectionQuarantine.
  2. Click Settings (the gear icon).
  3. Click in the text box, and redefine the maximum size for your Quarantine.

The Quarantine space allocation is now changed.

Avast One is currently available only in Australia.

Quarantine is a safe place in Avast One for storing potentially harmful files and completely isolating them from the rest of your operating system. Files inside Quarantine cannot be accessed or run by any outside processes, software applications, or viruses.

By default, files are moved to Quarantine in the following ways:

  • If you run a predefined Avast One scan and it detects a suspicious file.
  • If an active Avast One shield detects a suspicious file.

Alternatively, you can move files into Quarantine manually.

Access Quarantine

To access Quarantine:

  1. Double-click the Avast One shortcut on your desktop to open the application.
  2. Click the Device protection tile on the Avast One dashboard.
  3. Select Quarantine.

Move files to Quarantine

Avast One automatically moves malicious files to Quarantine if they cannot be repaired.

To manually add files to Quarantine:

  1. On the Quarantine screen, click Add file....
  2. Locate the file you want to move to Quarantine, and click Open.

The file now appears in Quarantine and can be sent for analysis.

Restore files from Quarantine

Restoring files from Quarantine poses a high security risk. This action requires advanced user knowledge and is only intended for specific situations (for example, if a critical system file is accidentally moved to Quarantine).

To move a file out of Quarantine:

  1. Tick the box next to the relevant file in Quarantine.
  2. Click More options (three dots), then select an action:
    • Restore: moves the file to its original location on your PC.
    • Restore and add exception: moves the file to its original location, and adds the file to your exception list to exclude it from all Avast One scans and shields. To view your exception list, click the User icon ▸ SettingsExceptions.
    • Extract: moves the file to a chosen location on your PC.
  3. Click Close.

Submit files to Avast Threat Labs

To ensure your PC stays protected, send files to Avast Threat Labs for further analysis. We recommend sending the following file types:

  • Potential malware: files that Avast Antivirus has not identified as malware, but you believe the files may be malicious.
  • False positive: files that Avast Antivirus has identified as malware, but you believe the files may be clean.

To submit a file to Avast Threat Labs:

  1. Tick the box next to the relevant file in Quarantine.
  2. Click More options (three dots), then select Send for analysis.
  3. Select either Potential malware or False positive and enter any additional information about the file into the text box, then click Send.
  4. Click Close.

The file is submitted to Avast Threat Labs for further testing. In most cases, Avast Threat Labs processes the files they receive without sending a response to you.

Delete files from Quarantine

This action permanently deletes files from your PC and cannot be undone.
  1. Tick the box next to the relevant file in Quarantine.
  2. Click Delete all at the bottom of the Quarantine screen.
  3. Click Yes, delete to confirm.

Increase Quarantine space

By default, Quarantine is allocated a maximum space of 5120 MB, which you can change in Quarantine settings. To configure Quarantine space allocation:

  1. Double-click the Avast One shortcut on your desktop to open the application.
  2. Click the Device protection tile on the Avast One dashboard.
  3. Select Quarantine.
  4. Click in the text box, and redefine the maximum size for your Quarantine.

The Quarantine space allocation is now changed.

  • Avast Premium Security 21.x for Windows
  • Avast Free Antivirus 21.x for Windows
  • Avast One 20.x for Windows
  • Avast One Free 20.x for Windows
  • Avast Omni 21.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 1 with Convenient Rollup Update, 32 / 64-bit

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