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What’s WinSysBiosVer64.exe? Is it safe or a virus?

WinSysBiosVer64.exe is an executable developed by Phoenix Technologies Inc., a company known for its BIOS and firmware solutions. This file is typically associated with Phoenix's BIOS update utilities, such as WinPhlash or other firmware management tools. Its primary function is to verify the current BIOS version on your system before proceeding with an update.

If you find WinSysBiosVer64.exe on your system, it's likely because you or someone else initiated a BIOS update using Phoenix's utilities. These tools are often provided by motherboard or system manufacturers that utilize Phoenix BIOS. The presence of this executable indicates that a BIOS update process was either completed or is pending.

Researched by Carl @ SpyShelter Labs

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More about WinSysBiosVer64.exe on WINDOWS

Who makes WinSysBiosVer64.exe?

We’ve found Phoenix Technologies Inc should be the publisher of WinSysBiosVer64.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: May 26, 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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