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What’s mscorsvw.exe (.NET Runtime Optimization Service)? Is it safe or a virus?

Mscorsvw.exe is a process that is related to the Microsoft .NET Framework. It is responsible for precompiling .NET assemblies in the background to improve application startup performance.

The process runs when the .NET Framework is installed or updated, and its main function is to optimize the performance of .NET applications by compiling them into native machine code. This helps to reduce the time it takes for .NET applications to start, as the precompiled code can be executed more efficiently. Mscorsvw.exe typically runs in the background and should not require any manual intervention from the user.

Researched by Carl @ SpyShelter Labs

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More about mscorsvw.exe on WINDOWS

Who makes mscorsvw.exe (.NET Runtime Optimization Service)?

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