Converting your legacy ESET credentials—consisting of a and Password —into a modern License Key is essential for activating newer versions of ESET software. Modern ESET products (Version 9 and later) use a unique string in the format XXXX-XXXX-XXXX-XXXX-XXXX for identification and activation. Why Convert Your Credentials?

If you cannot find your original Username and Password, you can use the ESET Lost License page to have your subscription details resent to the email address used during purchase. How to activate ESET Version 9 with a Username and Password

[Legacy Username + Password] ──> [ESET Portal] ──> [20-Character License Key] Step 1: Locate Your Legacy Credentials how do I use a new license on v8? - ESET NOD32 Antivirus

ESET maintains an automated web tool specifically for this purpose. This is the fastest and safest method.

Method 1: Using the ESET License Converter Portal (Recommended)