Many offline machines run outdated operating systems. ESET has officially ended support for Windows XP, but you can still find legacy offline updates. Search for on ESET's older support pages (knowledgebase article KB2882, version 4 or 5). Note: The update files are older and will not protect against modern threats effectively. The real solution is to upgrade the OS or isolate the network.
Plug the drive into the offline computer and copy the folder to a local directory (e.g., C:\ESET_Updates ). 2. Configure Advanced Setup eset nod32 offline update full