What is mfc90deu.dll?

Mfc90deu.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. The following information can help you determine if mfc90deu.dll is a Windows system file or if it belongs to an application that you can trust.

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Mfc90deu.dll file information

The process known as MFC Language Specific Resources belongs to software Microsoft Visual Studio (version 2008) or Microsoft Office Professional Plus (version 2010) or Microsoft Visual C (version 2008 Redistributable) by Microsoft (

Description: Mfc90deu.dll is not essential for the Windows OS and causes relatively few problems. The file mfc90deu.dll is located in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 66,560 bytes (45% of all occurrences), 63,312 bytes, 63,296 bytes or 64,352 bytes. 
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. You can uninstall this program in the Control Panel. The program has no visible window. Mfc90deu.dll is digitally signed. The service has no detailed description. Mfc90deu.dll is not a Windows system file. Mfc90deu.dll is able to record keyboard inputs. mfc90deu.dll appears to be a compressed file. Therefore the technical security rating is 64% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you run into problems with mfc90deu.dll, you can contact Customer Service or safely remove the program using the uninstall program of Microsoft Office Professional Plus 2010 or Microsoft Visual C++ 2008 (Control Panel ⇒ Uninstall a Program).

Recommended: Identify mfc90deu.dll related errors

Important: Some malware camouflages itself as mfc90deu.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the mfc90deu.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

This is a part of Microsoft Visual Studio

Summary: Average user rating of mfc90deu.dll: based on 1 vote with 1 user comment. One user thinks mfc90deu.dll is essential for Windows or an installed application.

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Best practices for resolving mfc90deu issues

A clean and tidy computer is the key requirement for avoiding problems with mfc90deu. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the mfc90deu.dll process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

mfc90deu.dll [all]