How to activate your license

To get access to all product functions and components, activate the license. License activation via the Installation wizard is available using a key file or a serial number. Windows XP users can activate the license using the key file only.


If you have already been a user of Dr.Web, you are eligible for extension of your new license for another 150 days. To enable the bonus, enter your serial number or specify the path to the key file used for the previous registration in the open window.

Activation using a serial number

If you have a serial number, you can

activate the license during the product installation via the Registration wizard;Details

activate the license in any moment after the installation via the Registration wizard included in the License manager;Details

register your serial number on the Doctor Web website and get a key file for license activation.

Activation using the key file

If you have a key file, you can activate your license:

during the installation via the Installation wizard;Details

in any moment after the installation via the Registration wizard included in the License manager Details

License activation on Windows XP

Users of Windows XP can activate license using the key file only. If there is only serial number without the key file, it is necessary to activate it on the Doctor Web website. After the registration is over, the link for downloading the key file is available. Use this key file for license activation.


A demo period cannot be activated and used on Windows XP.

Reactivating license

You may need to reactivate a license or a demo period if the key file is lost.


When reactivating a license or a demo period, you receive the same key file as during the previous registration providing that the validity period is not expired.

When you reinstall the product or install it on several computers, if the license allows for that, you will be able to use the previously registered key file. Reactivation of the key file is not required.

The number of requests for a key file receipt is limited. One serial number can be registered not more than 25 times. If more requests are sent, the key file will not be delivered. In this case, to receive a lost key file, contact technical support describing your problem in detail, stating your personal data input during the registration and the serial number. The key file will be sent by the technical support to your email address or delivered in a different way.

Possible questions

How to transfer a license to another computer?