How do I perform a manual reinstallation of my Avira Antivirus product?

The described procedure should only be applied if a conventional Avira uninstallation via “Control Panel → Programs and Features/Uninstall a program” fails.

To perform successfully a manual reinstallation of your Avira Antivirus you have to perform first a cleanup of your current Avira Antivirus.

I. Clean your system

1. Delete residual Avira files

  1. Boot your Windows System in Safe Mode.

  2. Make sure that your folder options are set as follows.
    Click: Start → Control Panel → Folder Options → View → Show Hidden Files and Folders → OK

  3. Delete the following folders if they exist:
    • C:\Program Files\Avira
    • C:\ProgramData\Avira
    • C:\Documents and Settings\All Users\Application Data\Avira
    Hint: There is no action required if these folders do not exist.

  4. Boot your Windows System in Normal Mode.

2. Clean your registry

  1. Download Avira RegistryCleaner.
  2. Run the downloaded file.
  3. Click Read Keys and confirm with OK after the scan.
  4. If any keys are found, enable the control box "select all", and click Delete.
  5. Confirm the next prompt with OK.

3. Reset the Windows LSP (Winsock)

This step is only required if your computer is running a Windows 7 operating system.

Windows 7

  1. Click Start → All Programs → Accessories.
  2. Right click "Command Prompt" and run it as administrator.
  3. Type the following command in the command line:

    netsh winsock reset

  4. Press Enter.
  5. Restart your computer.

II. Reinstall your Antivirus

  1. Log in to Avira Connect
  2. Click in the left menu panel the Subscriptions button.
  3. Search for “Antivirus” and click Install.
  4. The previously acquired Avira Antivirus package will be reinstalled, and the license will be activated automatically.

Affected products

  • Avira Free Antivirus [Windows]
  • Avira Antivirus Pro [Windows]
  • Avira Prime (unlimited devices) [Windows]
  • Avira Optimization Suite [Windows]
  • Avira Internet Security [Windows]
  • Avira Total Security Suite [Windows]
  • Avira Internet Security Suite [Windows]
  • Created : Friday, July 5, 2013
  • Last updated: Monday, November 27, 2017
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