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What’s MpCopyAccelerator.exe (Microsoft Malware Protection Copy Accelerator Utility)? Is it safe or a virus?

MpCopyAccelerator.exe is a legitimate system file developed by Microsoft, associated with Windows Defender or Microsoft Security Essentials. It is part of Microsoft's antivirus and anti-malware software, serving as a utility to optimize and accelerate the copying process of certain files during malware scans or actions taken to mitigate threats. This functionality ensures that relevant data is processed efficiently during the malware protection process, enhancing the overall performance and effectiveness of the antivirus software. As a system component, it operates in the background and is designed to improve the handling of files in scenarios involving potential malware.

Researched by Carl @ 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 MpCopyAccelerator.exe on WINDOWS

Who makes MpCopyAccelerator.exe (Microsoft Malware Protection Copy Accelerator Utility)?

We’ve found Microsoft Windows Publisher should be the publisher of MpCopyAccelerator.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 10, 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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