If you’re looking for free protection, consider:
If you have proof of purchase, Kaspersky Technical Support can sometimes recover a code using your license number, which is visible in the application's "Licensing" window. Important Warning on "Free" Activation Keys
Kaspersky Internet Security 2013 is no longer updated with virus definitions or security patches. Using it — even with a valid key — leaves your device vulnerable.
: Using 2013-era definitions in 2026 leaves your system "unprotected" against millions of threats created in the last decade.
