Open the ESET main program window and go to .

Using a unified License Key provides a smoother experience compared to juggling usernames and passwords:

If your 20-character key is rejected by modern software, double-check the characters. Hyphens must be included, and lookalike characters (such as the number 0 versus the letter O ) can easily be mistyped. It is always best to copy and paste the key directly from your purchase confirmation email. Error: "Activation Failed - Modules Cannot Be Updated"

If you are looking for credentials to log into a portal or activate a product, use these methods:

Do not trust third-party websites claiming they can convert your ESET keys; these are often phishing scams designed to steal your subscription.

ESET will email all license details associated with that address. Best Practices for ESET Activation