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What’s proquota.exe (ProQuota)? Is it safe or a virus?

The file proquota.exe is a legitimate Windows system process developed by Microsoft. It is responsible for managing user profile disk quotas, ensuring that individual users do not exceed their allocated storage space. This functionality is particularly relevant in enterprise environments where administrators enforce storage limits to maintain system performance and prevent any single user from consuming excessive disk space.​

When a user's profile approaches or exceeds the set quota, proquota.exe may prompt the user to delete unnecessary files to free up space. This helps maintain a balanced distribution of resources across multiple users.

Researched by Laura @ 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 proquota.exe on WINDOWS

Who makes proquota.exe (ProQuota)?

We’ve found Microsoft Windows should be the publisher of proquota.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: April 19, 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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