Using the Virus Chest in Avast Antivirus

The Virus Chest 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 the Virus Chest cannot be accessed or run by any outside processes, software applications, or viruses. If you double-click a file in the Virus Chest, only the file properties are displayed.

Refer to the sections in this article for instructions to work with files in the Virus Chest:

Access the Virus Chest

Open the Virus Chest using one of the following methods:

    1. Open the Avast user interface, go to ProtectionAntivirus, and click Virus Chest.
    2. Right-click the Avast icon in your system tray and select Virus Chest.
  1. Once inside the Virus Chest, you can view its contents, add new files, or perform actions on existing files.

Move files to the Virus Chest

Avast Antivirus automatically moves malicious files to the Virus Chest if they cannot be repaired (threats which cannot be repaired or moved are automatically deleted). 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 move a file into the Virus Chest, follow these steps from within the Virus Chest:

  1. Right-click anywhere in the Virus Chest table and select Add... from the context menu.
  2. Locate the file you want to move to the Virus Chest ('sample.exe' in the example below) and click Open. The file appears in the Virus Chest table.

Scan files in the Virus Chest

Manually scan or rescan files in the Virus Chest for known viruses by following these steps:

  1. Right-click an individual file (or a selection of files) and select Scan from the context menu. When the scan is complete, the scanning results appear.
  2. Click OK to close the scanning results dialog.

Restore files in the Virus Chest

You can return files that do not belong in the Virus Chest to their original locations.

Restoring and extracting files from the Virus Chest 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 moved to the Virus Chest).

To return a file to its original location, right-click the individual file (or selection of files) in the Virus Chest table and select Restore from the context menu.

Restore and add files to exclusions

When necessary, you can return files from the Virus Chest to their original locations and exclude them from future scanning processes so that Avast never flags them as malicious again.

Restoring files from the Virus Chest and adding them to exclusions poses a very high security risk. This action requires advanced user knowledge and is only intended for specific situations (for example, if a critical system file is moved to the Virus Chest).

To restore a file and exclude it from future scans, right-click the individual file (or selection of files) in the Virus Chest table and select Restore and add to exclusions from the context menu.

For more information about setting exclusions, refer to the following article:

Extract files from the Virus Chest

When necessary, you can extract files from the Virus Chest to a specified location.

Restoring and extracting files in the Virus Chest 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 moved to the Virus Chest).

To extract a file, follow these steps in the Virus Chest:

  1. Right-click the individual file (or selection of files) and select Extract... from the context menu.
  2. In the Browse for Folder dialog that appears, select a location and click OK. The file remains in the Virus Chest but is now also in the location you specified, for example, on your desktop.

Submit files from the Virus Chest to the Avast Threat Lab

Submit suspicious files or files that have been incorrectly identified as threats directly from your Virus Chest to the Avast Threat Lab for further analysis. Follow these steps:

  1. Right-click an individual file (or a selection of files) and select Submit to virus lab... from the context menu. A submission form appears.
  2. Select the sample type (Potential malware or False positive) from the Type drop-down menu.
  3. Complete the form as required:
    • If you are submitting a False positive file, specify the Program name, Program publisher, Program version number, and the reason you believe the file or program should not have been flagged (in the Additional info text box).
    • If you are submitting a Potential malware file, provide as much information as possible about the file in the Additional info text box, for example, where you obtained the file from.
  4. Optionally provide your email address.
  5. After completing the form, confirm your submission by ticking I know what I'm doing and click Submit.
  6. Click OK in the confirmation dialog that appears.
    If you are unable to submit the file for analysis, check that the file does not exceed the maximum size specified in your Virus Chest Settings.

Delete files from the Virus Chest

You can permanently delete files from the Virus Chest. Follow these steps:

  1. Right-click an individual file (or a selection of files) and select Delete from the context menu.
  2. Click Yes to confirm. The deleted file is removed from the Virus Chest and no longer appears in the table.

Manage Virus Chest settings

By default, the Virus Chest is allocated a maximum space of 256 MB, and 16 MB is the maximum size of any individual file that can be sent from the Virus Chest. Follow these steps to change the space allocation:

  1. Open the Avast user interface.
  2. Go to SettingsGeneral, then click Maintenance.
  3. Scroll down to the Virus Chest section and type your preferred values.
  4. Click OK to save your changes.
  • Avast Ultimate 17.x
  • Avast Premier 17.x
  • Avast Internet Security 17.x
  • Avast Pro Antivirus 17.x
  • Avast Free Antivirus 17.x
  • 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, 32 / 64-bit
  • Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate - Service Pack 2, 32 / 64-bit
  • Microsoft Windows XP Home / Professional / Media Center Edition - Service Pack 3, 32-bit

Need additional help?

Contact us
Avast Total Care

Your premium tech support for PCs, printers & more

Call now for a free consultation and subscribe! 1-844-340-9251
devices Get help for all your device problems 24x7
1-844-340-9251