How to Uninstall Kaspersky Internet Security 2015

Part 1 of 2:

Save all opened files. Unsaved changes can be lost.
Login with the Administrator account, if you aren't already using it.
Open the main window.
Click "Settings" link.
Use "Export settings" option. It can be found under the "Manage Settings" submenu.
Follow the export wizard's instructions.

Part 2 of 2:

Shut down running KIS client. To do this, right-click the Internet Security icon in your taskbar, then click "Exit" command.
Click "Continue" button in new dialogue window.
Start Kaspersky Internet Security Uninstaller. You can do this by either finding it in Start Menu (All Programs -> Kaspersky Internet Security -> Remove Kaspersky Internet Security) or clicking "Uninstall/Change" button in "Uninstall or change a program" utility.
Click "Accept" button in new dialogue window.
Click "Next" to continue uninstallation.
Select data to remove. You can save "Operational settings" and "iChecker data" if you plan to use other Kaspersky product.
Click "Next".
Click the "Remove" button.
Wait until Kaspersky Internet Security gets removed.
Reboot your computer. Do this to ensure that you've successfully removed KIS.

Kaspersky Internet Security is a good program if you want to keep your computer safe, but advanced system utilities can be hard to uninstall. If you want to do this, follow this guide. Save all opened files. Unsaved changes can be lost.