If you cannot find your license key or your old credentials, you can recover them directly from ESET.

: If you must activate ESET products on computers that never connect to the internet, generate an offline license file ( .lf ) through ESET Business Account. Offline files are the most reliable way to activate air‑gapped systems and completely bypass the need for either a License Key or a username/password.

This usually happens if the license key has already expired, has been canceled, or is a trial key. Trial keys often cannot be converted to legacy credentials. Verify your subscription status in your ESET HOME account. The Page Keeps Redirecting to ESET HOME

Input the email address associated with your license purchase. Submit: Click the "Convert" button.

To bridge this gap, ESET officially provided a free online converter tool. This comprehensive guide will walk you through the exact steps to convert your ESET License Key into a Username and Password, troubleshoot common activation issues, and explain why this system exists. Why Do You Need to Convert an ESET License Key?

Once you have your Username and Password, you can activate your legacy ESET product. Open the main program window of your ESET product.

Historically, ESET products (version 5 and earlier) were activated using a unique combination. Since the release of version 6, ESET moved to a standardized License Key —a 20-character string in the format XXXX-XXXX-XXXX-XXXX-XXXX .