Open the ESET program and navigate to > Change License .
Legacy editions of ESET software authenticated subscriptions via distinct combinations of custom usernames and passwords. To align with contemporary licensing architecture, ESET deployed a unified validation paradigm:
Prepare your info
As of 2026, ESET no longer issues new licenses in the Username/Password format. All new purchases, trials, and renewals are strictly License Key based. The conversion window is still open for legacy users, but it is wise to convert today . ESET has not announced a hard cutoff date for the old activation servers, but eventually, the "convert username and password to license key new" feature will be obsolete.
If you cannot find your original username or password, you can use the Lost License eset convert username and password to license key new
: Use tools like ESET HOME or ESET Business Account to oversee all your protected devices.
: Type your username and password into their respective text fields. Trigger Conversion : Click the Convert button. Open the ESET program and navigate to > Change License
If you are managing an older client installation, you can process the change directly inside the user interface.