To fix this error, remove the license and activate the application again:

1. Connect the device to the account at:
   • My Kaspersky, if you are using Kaspersky Anti-Virus, Kaspersky Internet Security, Kaspersky Total Security, Kaspersky Security Cloud. For instructions, see this article.
   • Kaspersky Small Office Security Management Console, if you are using Kaspersky Small Office Security. For instructions, see this article.
2. In the lower-right corner of the application window, click License. 

3. In the Licensing window, click the cross next to the license key.

4. To remove the license, click Delete in the Attention dialog box. 

5. Click Enter activation code.

6. Enter the activation code to the field and click Activate.

7. Wait until the Wizard completes its task, and then click the Finish button.

In the Licensing window, information about the new license will appear. 

If the issue persists, send a request to Technical Support with a detailed description of the issue:

• Through My Kaspersky, if you are using Kaspersky Internet Security, Kaspersky Anti-Virus or Kaspersky Total Security. For instructions, see Online Help.
• Through Kaspersky Small Office Security Management Console, if you are using Kaspersky Small Office Security. For instructions, see Online Help.