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

: A standalone application from ESET used to download the repository and create an offline mirror.

: A full offline repository can require up to 1.2 TB of space, though a basic update mirror for specific products typically requires significantly less (around 3 GB ).