ESET changes download links periodically. Always start from the official support page:
🔗 https://www.eset.com/int/support/update/
If you cannot find the Download Tool, contact ESET Business Support – they provide direct offline update packages for enterprise customers.
This guide applies to ESET NOD32 Antivirus version 9 through the latest versions (as of 2026). Legacy v4–v8 users: the manual "Update from folder" option still works with the same ZIP files.
To update ESET NOD32 Antivirus in an environment without an internet connection, you must use an Update Mirror
. This process involves downloading the latest detection modules on an internet-connected computer and then transferring them to the offline machine via a local network or removable media (like a USB drive). ESET Knowledgebase Update Methods for Offline Environments
There are three primary ways to manage updates for offline ESET products: Local Update Mirror
: You can configure one internet-connected ESET client to act as a "Mirror". It downloads the full set of updates from ESET’s servers and shares them with other computers on the same local network. ESET HTTP Proxy
: This method is more efficient for larger networks. The proxy downloads updates only when a client requests them, reducing total network traffic by caching common files. Removable Media (USB Drive) eset nod32 offline update full
: For completely isolated machines (air-gapped), you can manually copy update files from a mirrored computer to a USB drive and point the offline NOD32 client to that drive as its update source. ESET Security Forum Step-by-Step Offline Update Setup
To successfully update an offline computer, follow these standard procedures: Configure the Mirror (on an internet-connected PC) Open your ESET product and press Advanced Setup Navigate to Create update mirror and specify the Storage folder where the files will be saved. Point the Offline Client to the Mirror On the offline machine, open ESET and press , find the Update server Enter the full path to your mirror folder (e.g., \\ServerName\MirrorFolder or a local path like E:\ESET_Updates if using a USB drive). Run the Update tab in the main menu and click Check for updates
. The software will now pull the latest modules from your local source instead of the internet. ESET Knowledgebase Important Considerations Offline Installer
: If you are installing the product for the first time without internet, you must download the specific ESET Offline Installer
(available in 32-bit, 64-bit, or ARM versions) from the official ESET Support Portal Activation
: Even if updating offline, the product must be activated. For environments with no internet, you may need an Offline License File (.lf)
, which can be generated through the ESET Business Account or ESET HOME portals depending on your subscription type. Troubleshooting : If updates fail, ensure your Proxy mode ESET changes download links periodically
is set to "Do not use proxy server" in the Advanced Setup under Connection options
to prevent the client from trying to reach ESET's external servers. ESET Security Forum
Here’s a detailed write-up on using ESET NOD32 Offline Update (Full) for systems without internet access.
This method uses a feature hidden inside ESET NOD32 itself.
On the Offline PC (Target):
Actually, let's use the official manual process:
On the Internet-Connected PC (Helper):
On the Offline PC (Target):
If you manage 50 air-gapped workstations, manually clicking "Browse" on each PC is tedious. You can automate the ESET NOD32 offline update full process using a batch script.
The IT Admin Workflow:
@echo off
net stop ekrn
xcopy "D:\ESET_Offline_Update\*.*" "C:\ProgramData\ESET\ESET NOD32 Antivirus\Downloads\Update\" /E /Y
net start ekrn
Note: Paths vary by ESET version. Always test on a single machine first.
ESET NOD32 Antivirus supports offline updates by downloading update files (database and program modules) on a computer with internet access and transferring them to the target offline machine. This is useful in air-gapped environments, restricted networks, or where centralized update distribution is required.
When searching for a "Full" update, it helps to understand what is being updated:
Date: October 26, 2023 Subject: Analysis of ESET NOD32 Antivirus Offline Update Methods (Full Update) Prepared For: IT Administration / End Users requiring air-gapped updates This guide applies to ESET NOD32 Antivirus version