Copy the eset_mirror output folder to your offline environment. You can host this folder on a local intranet IIS/Apache web server or share it over the network via an SMB share path. Method 2: Manual Update Directives for Standalone PCs
: Enable the internal HTTP server within the ESET application's Update Mirror settings to allow other machines to download from it.
Keeping your cybersecurity defenses updated is critical to protecting your digital assets. While most systems update automatically via the internet, certain environments require a different approach. Securing isolated networks or conserving bandwidth demands a reliable offline update strategy.
You need a computer with internet access. eset nod32 antivirus offline updates
: On a computer with internet access, visit the official ESET website to download the latest offline update package.
Option B: Removable Storage (Best for isolated, single machines)
For IT administrators responsible for managing many offline computers, manually copying ZIP files is not feasible. For these scenarios, ESET provides the (also known as the Update Mirror Tool). This official tool allows you to create a local, centralized repository of update files that can serve many ESET products across your offline network. Copy the eset_mirror output folder to your offline
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If using a shared folder network path, enter: \\NetworkDrive\eset_mirror
With (often called “update packages” or “.zip updates”), you can: ✅ Update air-gapped or isolated systems ✅ Save bandwidth on limited connections ✅ Manually control when updates apply Keeping your cybersecurity defenses updated is critical to
Sometimes, the need for an offline update is temporary. If your computer is having DNS problems, is behind a restrictive firewall, or if your internet connection is temporarily down, downloading a single update package on another device and applying it offline can be a quick workaround.
For networks where an internal server has internet access but client workstations do not:
Copy the entire output folder ( ESET_Offline_Updates ) onto your USB drive.
Visit the official ESET download utilities page. Download the Mirror Tool executable matching your operating system (Windows or Linux). Step 2: Extract Your Offline License
The Complete Guide to ESET NOD32 Antivirus Offline Updates ESET NOD32 Antivirus relies on regular detection engine updates to protect your system from the latest digital threats. Typically, the software updates itself automatically via an active internet connection.