• New users: Please make sure that you have the username and password that came with your order.

• Existing users: If you already have a valid license for an earlier version of ESET Smart Security or ESET NOD32 Antivirus, you can upgrade to version 4 of the same product for free. Simply download the latest software and install it on your computer. Please make sure that you have your existing username and password available.

• Before installing, we recommend uninstalling your current protection (including older versions of ESET software), to ensure a smooth transition. Click here to access the list of uninstallers for common antivirus programs.

• Professional? Click here to request more information on enterprise solutions.

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