After your free 30-day trial expires, your security software will be deactivated. You can continue your protection by purchasing the full version of ESET Internet Security, ESET Smart Security Premium or ESET NOD32 Antivirus and entering your purchase license key into your ESET product. See instructions for upgrading your ESET product from the trial version to the full version here. For ESET Mobile Security and ESET Parental Control for Android, you can continue to use the FREE product version after your 30-day PREMIUM trial ends.