Trellix Stinger Portable for Windows download

Compact, on-demand Windows scanner

Trellix Stinger Portable is a small-footprint antivirus utility for Windows that runs without installation. It’s intended for users who need to perform occasional scans rather than continuous protection, so it’s a good fit when you suspect an infection and want a quick, focused check instead of a full security suite.

Designed for low-resource systems

Because it doesn’t require background real-time monitoring, this portable scanner is suitable for machines with limited CPU or memory—such as older laptops and netbooks. It identifies and removes detected malware while minimizing impact on system performance.

Running from removable media

Launch it directly from a USB stick or other external storage device.
No installation is needed: start the executable and begin scanning.
It scans the local machine for malicious items and cleans threats it finds.

Typical situations to use this tool

Emergency cleanup of a machine suspected to be infected.
Quick, targeted scans when full antivirus suites aren’t available.
Maintenance on low-powered devices where resource use must be kept low.
Portable diagnostics when you must check multiple computers without installing software.

Alternative option — McAfee Stinger (free)

McAfee Stinger is a comparable, free portable scanner you can run from removable media. It offers a similar on-demand approach to detecting and removing specific threats, making it another practical choice for quick scans on systems that can’t run a full antivirus package.

Runs without installation and is suitable for fast, targeted checks.
Useful as a backup scanner when you want a second opinion or different detection signatures.
Lightweight enough for older or underpowered computers.
Operates directly from USB or other external drives for easy portability.