Converting an ESET License Key into a Username and Password is a straightforward process when you use the official ESET License Manager website. The need arises primarily for offline systems, legacy software, or enterprise management consoles.
If you have a License Key but need your legacy Username/Password for an older version (Version 8 or earlier): Check your email Eset Convert License Key To Username And Password
, which is a shorter string used to identify the license to ESET technical support without exposing the actual key. How to Convert Credentials Converting an ESET License Key into a Username