When prompted, select "Use a purchased License Key" (your trial key works here) and enter the key, which is a unique string in the format XXXX-XXXX-XXXX-XXXX-XXXX .
: If you're looking for a free license key, I must remind you that using unauthorized or cracked license keys can lead to security risks, software malfunction, and potential legal issues. Instead, consider exploring Eset's official website for promotions, discounts, or special offers that might make the software more affordable. Eset Endpoint Security License Key Free
For individual users, ESET provides trial versions of their consumer products (like ESET Internet Security) which use the same award-winning NOD32 engine. When prompted, select "Use a purchased License Key"
If you are a registered non-profit or educational institution, ESET offers massive discounts that make the software nearly free. Final Verdict and potential legal issues. Instead