ESET Online Scanner
Free browser-based malware detection tool for Windows - no installation required
Download ESET Online Scanner
Free malware detection with no registration required
Filename
esetonlinescanner.exe
Type
Portable Executable
License
Freeware
Developer
ESET
About ESET Online Scanner
ESET Online Scanner provides comprehensive malware detection without requiring permanent installation on your Windows system. This free security tool performs deep scans to identify viruses, trojans, rootkits, spyware, and other malicious software that may be hiding on your computer. The scanner runs directly from your web browser, making it perfect for quick security checks on any Windows computer. It uses the same award-winning ThreatSense scanning technology and signatures as ESET Smart Security and ESET NOD32 Antivirus - providing enterprise-grade protection at no cost.
Threats Detected
Viruses
Trojans
Spyware
Rootkits
Phishing
Adware
Key Features
No Installation Required
No lengthy forms or installations - just a quick, secure download. Runs directly from your browser on any Windows computer.
Advanced Threat Detection
Uses ESET's award-winning ThreatSense detection engine to identify both known and emerging threats that other scanners might miss.
Works with Existing Antivirus
Designed to run alongside any existing antivirus. Perfect as a second-opinion scanner to verify your current security solution.
Completely Free
No commitment, no registration - completely free one-time scan. Provides an effective check for malware removal at no cost.
How It Works
1
Download the Scanner
Click the download button above to get the ESET Online Scanner executable - no lengthy forms or permanent installations required.
2
Launch and Configure
Run the downloaded file and accept the license agreement. The intuitive interface guides you through selecting scan settings and detection options.
3
Run System Scan
Choose between a quick scan (5-15 minutes) for common infection locations or a full system scan (30-60 minutes) for comprehensive examination.
4
Review and Remove Threats
After the scan, review detected threats in a detailed report. Choose whether to quarantine or remove each item safely from your system.
When to Use ESET Online Scanner
Suspicious Activity
Slow performance, unexpected pop-ups or unusual behavior on your system.
Second Opinion Scan
Verify your current antivirus is catching everything with a complementary scan.
Routine Security Check
Weekly or monthly scans to maintain system health and catch threats early.
Shared Computers
Perfect for systems used by multiple people or where you cannot install permanent software.
System Requirements
Windows 11/10/8.1/8/7
350-400 MB disk space
500 MB RAM
Internet connection
32-bit or 64-bit
Online Scanner vs Full Protection
🌐 ESET Online Scanner
Free one-time scans
No installation required
Works with existing antivirus
Deep malware detection
No real-time protection
Manual scanning only
Perfect for immediate threat removal and system verification.
🛡️ ESET Full Protection
Continuous real-time protection
Advanced firewall
Password manager
Automatic updates
24/7 threat monitoring
Paid subscription
Long-term safeguard for ongoing digital security.
Frequently Asked Questions
Is ESET Online Scanner really free?
Yes, ESET Online Scanner is completely free and provides an effective one-time check for malware removal. No payment or registration required.
How often should I run the scanner?
As a best practice, run a quick scan weekly or monthly. It is particularly useful when you suspect issues or want periodic system verification.
Can I use it with my existing antivirus?
Yes, it is an easy-to-use tool that can run alongside any existing antivirus. It is designed specifically as a complementary second-opinion scanning tool.
What does it detect and remove?
The scanner finds and removes viruses, trojans, spyware, phishing threats, rootkits, adware, and potentially unwanted applications. It identifies harmful programs that disrupt system operations and unwanted software that secretly monitors your activity.
How long does a scan take?
A quick scan takes 5-15 minutes and covers common infection locations. A full system scan takes 30-60 minutes for comprehensive examination of all files and system areas.
Important Note
Always download ESET Online Scanner from official sources. This page provides the tool for your convenience - all scans are performed using ESET's official ThreatSense scanning engine and virus signatures. The online scanner provides one-time scanning only. Consider full protection for continuous security needs.