First of all, we kindly ask you to not hijack someone else's topic. Moreover, this topic is unrelated to your issue. You should have created a new topic in the forum for the ESET product that you have purchased.
Anyways, you don't use a username/password to update ESET. Instead, after installation you enter your license key to activate it. If your license has already expired, please contact your local ESET distributor or seller.
Leonel_S gave kudos to Marcos in Forum password problems
