Open the main ESET window and press to enter Advanced Setup . Navigate to Update → Profiles → Updates .
On an internet-connected PC, download the latest offline update archive (often a .zip or .rar file) from an official or trusted ESET update source. eset nod32 antivirus offline updates
Move the file to the offline computer via USB and extract it to a dedicated folder, such as C:\eset_updates . Configure ESET Advanced Setup: Open the main ESET window and press to enter Advanced Setup
Go back to the main Update screen and click Check for updates . Method 2: Using the ESET Mirror Tool (Advanced/Business) Mirror Tool - Windows | ESET PROTECT On-Prem 12.0 Move the file to the offline computer via
In the field, click Edit and add the path to your extracted folder (e.g., C:\eset_updates ).
This method involves downloading a pre-packaged archive of signature updates and pointing your ESET software to that local folder.
You will need a separate computer with internet access to download the update files or use the Mirror Tool.