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What’s makecat.exe (Microsoft Trust Make Catalog utility)? Is it safe or a virus?

According to the official "Microsoft Learn" website, the utility makecat.exe (described as “Microsoft Trust Make Catalog utility”) is a command-line tool included with the Windows SDK that creates “catalog” files (.cat) used for verifying the integrity of a set of files (for example, drivers, troubleshooting packs, or applications) by storing their hashes in a signed catalog.

You would use it if you need to generate a catalog of file-hashes and then sign that catalog so Windows or an enterprise policy can trust that the files haven’t been tampered with.

Researched by Carl @ SpyShelter Labs

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More about makecat.exe on WINDOWS

Who makes makecat.exe (Microsoft Trust Make Catalog utility)?

We’ve found Microsoft Corporation should be the publisher of makecat.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: October 22, 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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