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What’s ngen.exe (Microsoft Common Language Runtime native compiler)? Is it safe or a virus?

The ngen.exe is a process associated with the Microsoft Windows operating system. It stands for Native Image Generator and is responsible for improving the performance of .NET applications.

When a .NET application is installed, ngen.exe compiles and preloads the necessary assemblies to native machine code, reducing the time required to load and execute the application. This process helps in minimizing the startup time of .NET applications and improving overall performance. Ngen.exe also helps in reducing the amount of memory required for running .NET applications, ultimately leading to a smoother and more efficient user experience.

Researched by Carl @ SpyShelter Labs

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More about ngen.exe on WINDOWS

Who makes ngen.exe (Microsoft Common Language Runtime native compiler)?

We’ve found Microsoft Windows should be the publisher of ngen.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 21, 2024

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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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