If you receive a message indicating that the update server could not authenticate your username and password, it is likely due to one of the following reasons: Your username and (or) password is entered incorrectly in the Update Setup
Error: Connecting to server - The address of the update server is known, but ESET NOD32 cannot connect. If your update method is to connect (through the internet) directly to ESET’s servers, please check the following:
a correct and valid username and password must be specified in the update setup panel the update server should be set to automatic selection (default setting) an Internet connection must be established at the time an update is performed
Your username and password were provided at the time of purchase and are required in order for our update servers to identify you as an ESET customer. In the event that you do not know your registration email address, please use our Customer Care Support Form
