ESET Online Scanner Overview
ESET Online Scanner is a free, on-demand malware scanner for Windows from ESET that checks a computer for threats without installing a full antivirus product. It is designed as a second-opinion and cleanup tool: you run it to scan the system using ESET's detection engine, remove anything it finds, and then it can remove itself, making it useful when you suspect an infection or want to verify another antivirus's results. Because it is on-demand, it does not provide continuous real-time protection — for that, a full antivirus is needed. It is free to use. It downloads the latest detection data each time it runs so scans use current signatures, and because it needs no permanent installation, it leaves no background services behind once cleanup is finished, which makes it convenient for occasional checks. Use the link on this page to reach Eset's official ESET Online Scanner download.