When activating a Kaspersky application, you may encounter the “Unknown error” message.


Install the latest version of the application.

  1. Download the installer from the Kaspersky website:
  2. Uninstall the current version of the application. For instructions, see this article.
  3. Reboot the your computer.
  4. Run the installation file and follow the instructions in these articles:
  5. Try to activate the application once again.

What to do if the issue persists

If the issue persists, submit a request to Kaspersky technical support by choosing the topic and filling out the form.

Source : Official Kaspersky Brand
Editor by : BEST Antivirus KBS Team

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