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What’s wmlhost.exe (Webex ML Host)? Is it safe or a virus?

wmlhost.exe is a background process associated with Cisco's Webex platform, specifically serving as the "Webex ML Host." It supports machine learning (ML) functionalities within Webex applications, such as enhancing audio, video, or collaboration features. This may include tasks like noise suppression, speech enhancement, or optimizing video performance during virtual meetings. As part of the Webex software suite, it runs to ensure smooth user experiences, leveraging machine learning algorithms to improve communication quality. It is legitimate software from Cisco Systems, designed to operate quietly in the background without user interaction while contributing to Webex's advanced features.

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 wmlhost.exe on WINDOWS

Who makes wmlhost.exe (Webex ML Host)?

We’ve found Cisco Systems, Inc. should be the publisher of wmlhost.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 12, 2025

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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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