What is mscoreei.dll?

The genuine mscoreei.dll file is a software component of Microsoft .NET Framework by Microsoft.
The Microsoft .NET Framework is a software framework that provides a runtime environment and code library for application development, testing, and execution. Mscoreei.dll is a resource library that is part of the .NET Runtime Execution Engine, a compiler that coverts higher-lever code into machine code. This is a critical Windows component and should not be disabled or removed.

The Microsoft .NET Framework has been developed by Microsoft beginning in the late 1990s. It was originally known as Next Generation Windows Services. The .NET Framework is a collection of Application Programming Interfaces (APIs) and a shared library of code (known as the Framework Class Library (FCL)). Additionally, the framework provides a runtime environment (known as the Common Language Runtime (CLR)) for applications to be in a virtual sandbox, and proving them with services, such as memory and thread management, exception handling, and security.

Microsoft, founded by Bill Gates and Paul Allen in 1975, is the world's largest software maker with respect to revenue. Microsoft is best known for the Windows operating system. The company quickly rose to fame and fortune following the success of its 1986 public share offering turning three people into billionaires and an estimated 12,000 Microsoft employees into millionaires. Microsoft is headquartered in Redmond, Washington, USA.

MsCoreEi stands for Microsoft .NET Core Runtime Execution Engine

Mscoreei.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. You can fix your mscoreei.dll problem by downloading the correct mscoreei.dll file. The following information can help you determine if mscoreei.dll is a Windows system file or if it belongs to an application that you can trust.

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Mscoreei.dll file information

The process known as Microsoft .NET Runtime Execution Engine or Microsoft .NET Framework (version 4 Client Profile) belongs to software Microsoft .NET Framework (version 4 Client Profile, 4 Client, 4, 4.5 RC) or The Medical Manager MMClient by Microsoft (

Description: Mscoreei.dll is not essential for the Windows OS and causes relatively few problems. Mscoreei.dll is located in a subfolder of C:\Windows or sometimes in a subfolder of "C:\Program Files"—in most cases C:\Windows\Microsoft.NET\Framework\v4.0.30319\. Known file sizes on Windows 10/8/7/XP are 413,520 bytes (75% of all occurrences), 413,008 bytes and 19 more variants. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program has no visible window. It is digitally signed. There is no detailed description of this service. The file is not a Windows system file. It can change the behavior of other programs or manipulate other programs. Therefore the technical security rating is 56% dangerous, but you should also take into account the user reviews.

Uninstalling this variant: If you encounter difficulties with mscoreei.dll, you may want to safely remove the program using the uninstall program of Microsoft .NET Framework or Microsoft .NET Framework 4 Client Profile (Control Panel ⇒ Uninstall a Program), go to the support area of the Microsoft website or update the program.

Recommended: Identify mscoreei.dll related errors

Important: Some malware camouflages itself as mscoreei.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the mscoreei.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Safe File Used by Microsoft FrameWork.
  Denii   (further information)
used to run .net applications
  jj89XD   (further information)
not sure what this is... something for .netframework so it should be safe.
microsoft framework.
  Adam Eastwood  
part of microsoft .NET framework v4. trustable.
As the .NET framework is a Microsoft product (free) that is required to run many programs, it is actually pretty important, unless you just don't have any programs that need it, in which case, there is still no reason to remove it. Just to be on the safe side, ignore it.
Part of Microsoft Net Frame Work it allows programs to operate across the network. Threads them in
Microsoft .NET Runtime Execution Engine
MAY be used by windows operating system depending on what programs/features you use. it CAN be exploited like most framework components. monitor your system and keep your malware/virus software running.
  ryan gower  
Microsoft .NET Runtime Execution Engine
ati graphik need it..

Rating chart

Summary: Average user rating of mscoreei.dll: based on 17 votes with 11 user comments. 10 users think mscoreei.dll is essential for Windows or an installed application. 2 users think it's probably harmless. 3 users think it's neither essential nor dangerous. 2 users think mscoreei.dll is dangerous and recommend removing it. 2 users don't grade mscoreei.dll ("not sure about it").

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Best practices for resolving mscoreei issues

A clean and tidy computer is the key requirement for avoiding problems with mscoreei. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the mscoreei.dll process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

mscoreei.dll [all]