How to remove Avast products?



Kaspersky Small Office Security 2.0 (FS)


How to remove Avast products?

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2012 Jan 24 ID: 6062

Applies to Kaspersky Small Office Security 2 for File Server

Sometimes after removal of Avast anti-virus software with the standard means and the computer restart some records may still remain in the system registry and prevent Kaspersky Small Office Security 2 for File Server from installation.

Before the files are copied onto a hard disk the Setup Wizard scans the disk for software incompatible with Kaspersky Lab applications. Records in the system registry are recognized by the Setup Wizard as fully installed Avast software, even though the product was removed and is no longer installed on the PC. As a result Kaspersky Small Office Security Setup Wizard asks to delete the detected incompatible software manually and terminates the installation process.

How to remove Avast software using standard Microsoft Windows tools?

  1. In the bottom left corner click the Start button
  2. Perform the following actions:
    • for users of Windows Server 2003:
      • Select Control Panel > Add or Remove Programs.
    • for users of Windows Server 2008:
      • Select Control Panel.

      • In the Control Panel window select the Programs section.

      • In the Control Panel\Programs window select Programs and Features.


  3. In the list of programs select Avast anti-virus.
  4. Perform the following actions:
    • for users of Windows Server 2003:
      • click the button Change/Remove.
    • for users of Windows Server 2008:
      • Double-click the application name.
  5. Follow the instructions of the Setup Wizard.

    Try to install Kaspersky Small Office Security 2 for File Server once again.

    If Avast anti-virus has been successfully removed from your computer you do not need to perform the following steps. 

    If an error message appeared or if a message informing that Avast anti-virus was not uninstalled successfully, follow the recommendations below to uninstall the product completely.

    The utility aswclear5.exe to remove Avast software

    To remove Avast software, use a special Avast removal tool aswclear5.exe (ASWCLEAR5 (С) ALWIL Software):

    1. Download the tool aswclear5.exe.
    2. Reboot in Safe Mode.
    3. Run the file aswclear5.exe.
    4. In the Select product to uninstall field, select the required product you want to uninstall.
    5. If you installed Avast in a different folder than the default, then select the required folder in the field Enter path to folder where selected product is installed.
    6. Click the Uninstall button. Wait till the process is completed.
    7. After the Avast software is uninstalled, the Question window appears. It will contain the following information: "Remaining items will be removed after restart. Do you wish to restart now?". Click the Yes button to restart your computer.


    What should I do if I cannot install Kaspersky Small Office Security 2 for File Server?

    If all remains of your previous anti-virus software were removed, or you have not had any anti-virus software installed on your computer, but you cannot install Kaspersky Small Office Security 2 for File Server, then create a request to Kaspersky Lab Technical Support via the My Kaspersky Account. To your request attach:

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