To obtain a modern License Key from your old Username/Password, you must follow one of these official procedures:

ESET has streamlined the conversion process via a dedicated web tool. This is the safest, fastest, and most officially supported method.

Convert your license once and store the new license key in a safe place. You’ll avoid activation problems when reinstalling or updating ESET.


To convert your legacy ESET username and password into a modern License Key (formatted as XXXX-XXXX-XXXX-XXXX-XXXX), you should use the official ESET Business Account License Converter or your product’s built-in conversion tool. Method 1: Using the Online License Converter

This is the most direct way to get your key if you are not currently at your computer with the software installed.

Locate your credentials: Find the email sent by ESET when you first purchased your product. You will need the specific Username and Password provided there.

Access the Converter: Go to the ESET Business Account License Converter.

Enter Details: Input your legacy Username and Password into the designated fields.

Convert: Click Convert. Your new 20-character License Key will be displayed on the screen.

Save your Key: Copy the key. You may also receive a confirmation email containing this new key for your records. Method 2: Converting Directly in the ESET App

If you have an older version of ESET installed (such as Version 9), you can convert your credentials within the interface.

Open ESET: Locate the ESET icon in your system tray (lower right corner) and open the main window.

Navigate to Help: Select Help and Support from the left-hand menu. Change License: Click Change License at the bottom right.

Input Legacy Info: Select the option "I have a Username and Password, what do I do?".

Finalize: Enter your details, click Convert, and then use the resulting key to Activate your product. Troubleshooting

Invalid Credentials: If the system says your information is invalid, use the ESET Lost License page to have your original credentials resent to your registered email.

Business Users: For larger environments, you can manage and convert these licenses through the ESET PROTECT On-Prem console under More > License Management.

Once you have the shiny new License Key (e.g., ABCD-1234-EFGH-5678-IJKL), here is how to use it: