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What’s wslhost.exe (Microsoft Windows Subsystem Service Host)? Is it safe or a virus?

`wslhost.exe` is a critical process associated with the Windows Subsystem for Linux (WSL), a feature in Microsoft Windows that allows users to run Linux distributions natively alongside Windows.

It acts as a bridge between the Windows operating system and Linux environments by handling interoperability between both systems, including file system access, networking, and process execution.

This executable manages interactions and resource sharing between the Windows kernel and Linux processes, enabling seamless execution of Linux tools and applications within Windows.

It ensures that WSL can function correctly, facilitating integration and performance within the hybrid Windows-Linux environment.

Researched by Carl @ SpyShelter Labs

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A Trojan is a harmful software that pretends to be a legitimate program or file to deceive users into downloading it. It can steal personal information, damage files, or give hackers control over the infected device.

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More about wslhost.exe on WINDOWS

Who makes wslhost.exe (Microsoft Windows Subsystem Service Host)?

We’ve found Microsoft Windows should be the publisher of wslhost.exe.

How do we know? Our SpyShelter cybersecurity labs focuses on monitoring different types of Windows PC executables and their behaviors for our popular SpyShelter Antispyware software. Learn more about us, and how our cybersecurity team studies Windows PC executables/processes.

What does it mean if someone is the publisher of a PC .exe (executable or process)?

The publisher of an executable is the entity responsible for its distribution and authenticity. Most processes/executables on your PC should be signed. The signature on the executable should have been verified through a third party whose job it is to make sure the entity is who it says it is. Find an unsigned executable? You should consider scanning any completely unsigned .exe on your PC.

Last updated: March 29, 2025

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Why should you trust us?

Our team at SpyShelter has been studying Windows PC executables for over 15 years, to help fight against spyware, malware, and other threats. SpyShelter has been featured in publications like The Register, PC Magazine, and many others. Now we’re working to share free, actionable, and easy to understand information about Windows executables (processes) with the world, to help as many people as possible keep their devices safe. Learn more about us on our "About SpyShelter” page.

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