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What’s UwfServicingSvc.exe (Unified Write Filter Servicing Helper Service)? Is it safe or a virus?

UwfServicingSvc.exe, or Unified Write Filter (UWF) Servicing Helper Service, is a system process in Microsoft Windows designed for devices using the Unified Write Filter, commonly found in embedded systems or kiosks. UWF protects storage by redirecting write operations to a virtual overlay, ensuring the underlying disk remains unaffected. However, this can complicate servicing tasks like Windows Updates. The UwfServicingSvc.exe facilitates seamless updates or maintenance by temporarily suspending the filter without requiring its manual deactivation, allowing changes to persist. This service ensures system integrity and usability for specialized environments relying on UWF for data protection and system stability.

Researched by Laura @ SpyShelter Labs

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More about UwfServicingSvc.exe on WINDOWS

Who makes UwfServicingSvc.exe (Unified Write Filter Servicing Helper Service)?

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