If you encounter the “Invalid key” error when trying to activate a Kaspersky application, wait for an hour and try again. The activation server may be unavailable due to maintenance.

If this doesn’t help, remove the license from the application and then activate it again:

  1. In the main window of your Kaspersky application, click License in the lower-right corner. To learn how to open the main application window, see this article.
  2. Click License information.

Opening the detailed license information window in a Kaspersky application

  1. Click Delete.

Removing the license from a Kaspersky application

  1. Click Delete to confirm removing the license.

Confirming license information removal in a Kaspersky application

  1. Activate the application again using your activation code. To learn how to activate the application, see the following articles:
    • Kaspersky Internet Security 2120
    • Kaspersky Anti-Virus 2120
    • Kaspersky Total Security 2120
    • Kaspersky Small Office Security 87

What to do if the error persists

If the solution didn’t work, contact 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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