Before discussing the license key, let’s clarify the product. ESET File Security is a native 64-bit application designed exclusively for Windows Server OS (from 2008 R2 to 2025). It provides:
A: Yes. Deactivate the key from the old server (via the ESET GUI → Help → Deactivate License). Then activate on the new server. No need to buy a new key unless you have exceeded concurrent usage. eset file security for microsoft windows server license key
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