The license key is tied to a specific product. An Eset Home Security key will not work for Eset Server Security. You need a dedicated business server license.
Eset Server Security offers a range of benefits, including: Eset Server Security License Key
You can obtain a valid ESET Server Security license key through various channels: The license key is tied to a specific product
A: Pre-2020, Eset used a Username/Password pair for older products (Eset NOD32 Antivirus 4.x). Modern Eset Server Security uses only the License Key format. If you have legacy credentials, contact support to convert them. Eset Server Security License Key
For organizations managing multiple servers, ESET provides centralized tools: ESET Business Account (EBA)