ESET Online Scanner review

ESET Online Scanner is a good second opinion when your regular antivirus says the PC is clean but it clearly is not. It is a free download for Windows that launches without installation, runs a full malware scan with a progress bar, and then shows a detailed report where you choose to quarantine or remove each detected item. ESET says it targets viruses, trojans, spyware, ransomware, adware and other threats. Because it is a separate engine from Malwarebytes or Microsoft Defender, it can catch what those missed, and ESET asks for no credit card or long forms. The page is careful to describe it as a one-time scan for a computer, not a website or file checker, and it gives no ongoing protection. After a cleanup ESET suggests its HOME Security Premium trial, which runs for 30 days. Mac users will need a different tool, since the scanner is Windows only.

Who it is for

People who already have antivirus but want a second opinion scan from a different engine.

Price

Free one-time scan for Windows; ESET HOME Security Premium has a 30-day free trial.

One-time scan to remove malware and threats from your computer for FREE
Quoted from the vendor pricing page on November 10, 2026.

Key features

• One-time full scan of a Windows PC
• Detects and removes viruses, trojans, spyware, ransomware and adware
• Installation-free launch after a quick download
• Detailed report with options to quarantine or remove each item
• No credit card or lengthy forms required

Strengths and weaknesses

• Strength: Free with no sign-up forms
• Strength: Runs alongside your existing antivirus as a second opinion
• Strength: Clear step-by-step report of what it found
• Weakness: Windows only
• Weakness: No real-time protection after the scan
• Weakness: ESET points you to a paid trial for ongoing protection

Key facts

• Platform: Windows
• Install needed: No, installation-free launch
• Price: Free
• Paid upgrade trial: 30 days, ESET HOME Security Premium

Where it ranks

ESET Online Scanner is No. 4 in our Best Malware Removal Tools verdict.