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What’s fsmainui.exe (F-Secure Consumer Main UI )? Is it safe or a virus?

The fsmainui.exe process is part of F-Secure's consumer security products, serving as the main graphical user interface (UI) for interacting with the application. It allows users to access and manage the features of the F-Secure security suite, such as antivirus scanning, browsing protection, and other tools for safeguarding their devices from malware, threats, and vulnerabilities. This process facilitates user interaction with the software, displays notifications, and enables configuration of security settings. It typically runs in the background when the security suite is active, ensuring users can efficiently oversee their system's protection without directly handling core system operations.

Researched by Laura @ SpyShelter Labs

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Who makes fsmainui.exe (F-Secure Consumer Main UI )?

We’ve found F-Secure Corporation should be the publisher of fsmainui.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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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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