To block banner ads, you must enable Anti-Banner:

1. In the main application window, click the gear button .

1. If you have problems opening the application, see this guide.

2. In the Settings window, find Anti-Banner and enable it.

If Anti-Banner is enabled, but a banner is still visible on the website, add it to the list of blocked items. If you’re not sure how to do so, see the articles for Kaspersky Internet Security and Kaspersky Total Security.

If you notice banner ads appearing on websites that weren’t there before, it’s possible that you have accidentally installed adware on your computer. It might have been installed, for instance, together with a new browser. You can delete adware using the Software Cleaner tool.

1. In the main window of Kaspersky Internet Security 2018, click More tools.

1. If you have problems opening the application, see this guide.

2. In the Tools window, click Software Cleaner.

3. Click Run to perform an analysis the applications installed on your computer.

4. If your Kaspersky Lab product detects an application requiring removal, a window will appear with a link to the analysis results. Follow the link.

5. To remove an unwanted application, click Remove.

During the installation of an application, you might not notice a series of checkboxes besides additional applications that are installed by default. Should this be the case, you might accidentally install adware. To prevent adware being installed on your computer, configure Application Manager.

1. In the main window of your Kaspersky Lab product, click the gear button .

1. If you have problems opening the application, see this guide.

2. In the Settings window, go to Protection → Application Manager.

3. In the Application Manager settings window, make sure Application Manager is enabled. Select the checkboxes besides the functions you require. 

Application Manager in Kaspersky Lab products works with limitations. For more information, see the articles for Kaspersky Internet Security and Kaspersky Total Security.

When you browse websites, their owners collect information about your activity in order to offer you targeted ads based on your preferences. To prevent websites from collecting your data, configure Private Browsing.

1. In the main window of your Kaspersky Lab product, click the gear button .

1. If you have problems opening the application, see this guide.

2. In the Settings window, go to Protection → Private Browsing.

3. In the Private Browsing settings window, select the checkbox Block data collection.

For a list of supported browsers, see the articles for Kaspersky Internet Security and Kaspersky Total Security.

Adware detection is enabled by default in Kaspersky Lab products. However, you should also enable the detection of legal applications that can be used for advertising purposes.

1. In the main window of your Kaspersky Lab product, click the gear button .

1. If you have problems opening the application, see this guide.

2. In the Settings window, select Additional → Threats and Exclusions.

3. In the Threats and Exclusions settings window, select the checkbox Detect other software that can be used by criminals to damage your computer or personal data.

Configure Web Anti-Virus so that your Kaspersky Lab application checks websites for advertising.

1. In the main window of your Kaspersky Lab application, click the gear button .

1. If you have problems opening the application, see this guide.

2. In the Settings window, select Protection → Web Anti-Virus.

3. In the Web Anti-Virus settings window, click Advanced Settings.

4. In the Advanced settings of Web Anti-Virus window, select the checkbox Check the website for advertising.  

The application will alert you if you attempt to open an advertising website.