In order to renew the license for Kaspersky Internet Security 2013, perform the following actions:

1. Open the main application window.
2. At the bottom of the window, click the Licensing link.

3. In the Licensing window, click on the Buy license renewal button.

4. License Renewal and Upgrade Center page will open.
5. Follow the steps offered to renew the license.

If your current license has expired you need to activate the application with a new activation code:

1. Open the main program window.
2. In the right bottom part of the window click the Insert your activation code here link.

3. In the License expired section click the Enter activation code button.
4. In the Enter activation code window enter your activation code in an empty field.
5. Click the Next button.

6. Wait until the work of the activation wizard is over.
7. Click the Finish button.
8. The Licensing window will provide information about the new license.

9. Close the main program window.

If your existing license is active you can continue to use the remaining validity period but at the same time add a new activation code. The new activation code will be automatically activated as soon as the current license expires. To add a new code to the program, do the following:

1. Open the application window.
2. In the right bottom part of the window click the Licensing link.

3. In the New activation code section click the Enter activation code button.

4. In the Enter activation code window enter the received activation code into an empty field.
5. Click the Next button.

The current license will continue to run and the new code will be added as a reserve code.

6. Wait until the work of the activation wizard is over.
7. Click the Finish button.
8. The Licensing window will provide information about the active and the new licenses.
9. Close the main program window.

New activation code is added to your product. The validity period of this code will automatically start when the current code expires.

It means you may have entered your activation code incorrectly. An activation code should be entered from the keyboard in Latin ONLY, without hyphens. The program calculates the number of the entered symbols and automatically moves the cursor into the next field.

Check if the activation code is entered correctly and if needed, enter it once again.

If the error keeps repeating, contact Kaspersky Lab Technical Support by sending a request via My Kaspersky Account service. In your request give detailed description of your problem. You can find the information how to manage My Account in FAQ for My Account.