How to Download, Fix, and Update MFC42.dll.mui

Last Updated: 11/24/2023
[Time Required for Reading: 3.5 minutes]

MFC42.dll.mui, also known as a MFCDLL Shared Library - Retail Version file, was created by Microsoft for the development of Microsoft (R) Visual C++. MUI files fall under under the Win32 DLL (Dynamic link library) file type category.

The first version of MFC42.dll.mui was released for the Windows Vista Operating System on 11/08/2006 inside Windows Vista. The most recent version [file version 6.06.8063.0] was introduced on 07/29/2015 for Windows 10. MFC42.dll.mui is found in Windows 10, Windows Vista, and Windows 8.1.

In this article, you will find detailed MFC42.dll.mui information, a MUI file troubleshooting guide, and a list of versions that are available for free download.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	MFC42.dll.mui
File Extension:	MUI file extension
Description:	MFCDLL Shared Library - Retail Version
Object File Type:	Dynamic link library
File Operating System:	Windows NT 32-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	Microsoft (R) Visual C++
Legal Copyright:	Copyright (C) Microsoft Corp. 1993-2002

File Details
Character Set:	Windows, Latin1
Language Code:	English (U.S.)
File Flags:	Pre-release
File Flags Mask:	0x003f
Entry Point:	0x0000

View Other MFC42.dll.mui Information

File Info	Description
File Size:	31 kB
File Modification Date/Time:	2017:03:18 05:02:30+00:00
File Inode Change Date/Time:	2017:11:05 07:07:54+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	0000:00:00 00:00:00
PE Type:	PE32
Linker Version:	14.10
Code Size:	0
Initialized Data Size:	31232
Uninitialized Data Size:	0
Entry Point:	0x0000
OS Version:	10.0
Image Version:	10.0
Subsystem Version:	6.0
Subsystem:	Windows GUI
File Version Number:	6.6.8063.0
Product Version Number:	6.6.4.0
File Flags Mask:	0x003f
File Flags:	Pre-release
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Windows, Latin1
Company Name:	Microsoft Corporation
File Description:	MFCDLL Shared Library - Retail Version
File Version:	6.06.8063.0
Internal Name:	MFCDLL
Legal Copyright:	Copyright (C) Microsoft Corp. 1993-2002
Original Filename:	MFC42.DLL.MUI
Product Name:	Microsoft (R) Visual C++
Product Version:	6.06.400
Legal Trademarks:

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are MFC42.dll.mui Error Messages?

Dynamic Link Library MFC42.dll.mui Errors

MFC42.dll.mui is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like MFC42.dll.mui, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like sapisvr.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same MFC42.dll.mui file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared MUI file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when MFC42.dll.mui is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common MFC42.dll.mui errors include:

Access Violation at address - MFC42.dll.mui.
MFC42.dll.mui could not be found.
Cannot find C:\Windows\System32\en-US\MFC42.dll.mui.
Cannot register MFC42.dll.mui.
Cannot start Windows. A required component is missing: MFC42.dll.mui. Please install Windows again.
Failed to load MFC42.dll.mui.
The application has failed to start because MFC42.dll.mui was not found.
The file MFC42.dll.mui is missing or corrupt.
This application failed to start because MFC42.dll.mui was not found. Re-installing the application may fix this problem.

Your MFC42.dll.mui file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Windows), or deleted by a malware infection. Furthermore, MFC42.dll.mui file corruption could be caused from a power outage when loading Windows, system crash while loading MFC42.dll.mui, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix MFC42.dll.mui Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your MFC42.dll.mui issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
When you see the search box, type "System Restore" and press "ENTER".
In the search results, find and click System Restore.
Please enter the administrator password (if applicable / prompted).
Follow the steps in the System Restore Wizard to choose a relevant restore point.
Restore your computer to that backup image.

If the Step 1 fails to resolve the MFC42.dll.mui error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing MFC42.dll.mui file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt MFC42.dll.mui files (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "cmd" but DO NOT PRESS "ENTER".
Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
You'll be prompted with a permission dialog box.
In the box, click "YES".
You should have a black screen with a blinking cursor.
In that black screen, type "sfc /scannow" and hit "ENTER".
SFC will begin scanning for MFC42.dll.mui issues and any other system file problems.
Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

If this Step 2 fails as well, please proceed to the Step 3 below.

sfc /scannow

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many MFC42.dll.mui error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

Hit the Windows Start button
In the search box, type "Update" and press "ENTER".
In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
If updates are available for download, click "Install Updates".
After the update is completed, restart your PC.

If Windows Update failed to resolve the MFC42.dll.mui error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your MFC42.dll.mui File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate MFC42.dll.mui file version. We maintain a comprehensive database of 100% malware-free MFC42.dll.mui files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download MFC42.dll.mui Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy the file into the appropriate directory for your Windows version:

Windows Vista: C:\Windows\System32\en-US\
Windows Vista: C:\Windows\SysWOW64\en-US\
Windows 7: C:\Windows\System32\en-US\
Windows 7: C:\Windows\SysWOW64\en-US\
Windows 8: C:\Windows\System32\en-US\
Show 2 more directories +

Windows 8.1: C:\Windows\System32\en-GB\
Windows 10: C:\Windows\System32\en-US\

Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve MFC42.dll.mui problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download MFC42.dll.mui Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying MFC42.dll.mui to your appropriate Windows system directory. Microsoft typically does not release Windows MUI files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing MFC42.dll.mui and all other MUI files for Windows. An incorrectly installed MUI file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10

File Name

Software Version

File Version

Architecture

MFC42.dll.mui

6.6.4.0

6.06.8063.0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft (R) Visual C++
Software Version:	6.6.4.0
File Version:	6.06.8063.0
File Size:	31744
File Date:	03/18/2017
MD5 Checksum:	d3810050e2f5c82866d31fa856e0fed8
SHA1 Checksum:	b781d7c351540985b95ec1a99132f123282b0201
SHA256 Checksum:	cdef71ec972c6b28dc0b1b5a6713e2b1c181d89a97baf093f76aa8c8ea594c1f
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	31232
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.0
File Modification Date/Time:	03/18/2017

Windows Vista

File Name

Software Version

File Version

Architecture

MFC42.dll.mui

6.6.4.0

6.06.8063.0

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Microsoft (R) Visual C++
Software Version:	6.6.4.0
File Version:	6.06.8063.0
File Size:	31232
File Date:	11/02/2006
MD5 Checksum:	4aca9f59fe26c0c91f683e74e7bd2fbc
SHA1 Checksum:	197186ce21860004f885d66523a31ed7aa3adf15
SHA256 Checksum:	5e980a0c809573c754c1fe2e70ea929377f967ce70a094406100f7ecf1557441
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.0
Initialized Data Size:	30720
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	5.2
File Modification Date/Time:	11/02/2006

MFC42.dll.mui

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	40960
MD5 Checksum:	035811772900adbfa3252527f9cf8b15
SHA1 Checksum:	0ff8ed08abf790d12b3368fcda112e90f9aa2cea
SHA256 Checksum:	75da9f924f1c3cc18b7e84033044dee11a5f9a4327e72238edf116e3baef3f54
CRC32:
File Directory Location:	C:\Windows\SysWOW64\en-US\

File Version, System, and Machine Information
There is no information available.

Windows 8.1

File Name

Software Version

File Version

Architecture

MFC42.dll.mui

6.6.4.0

6.06.8063.0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Microsoft (R) Visual C++
Software Version:	6.6.4.0
File Version:	6.06.8063.0
File Size:	31232
File Date:	11/21/2014
MD5 Checksum:	0fe2fefbbc77d5bc62569e6f75312ffe
SHA1 Checksum:	2387d4c44b6505eb976656e2bb2fd1d46b1bd1c5
SHA256 Checksum:	a30f208ccee360a1527c7a826c7a6c005beb27c7e9f553368d9c658bdf264f33
CRC32:
File Directory Location:	C:\Windows\System32\en-GB\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	30720
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.0
File Modification Date/Time:	11/21/2014

Windows 8

File Name

Software Version

File Version

Architecture

MFC42.dll.mui

6.6.4.0

6.06.8063.0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft (R) Visual C++
Software Version:	6.6.4.0
File Version:	6.06.8063.0
File Size:	31232
File Date:	07/26/2012
MD5 Checksum:	51407bf59fb5faef4d324037b0184381
SHA1 Checksum:	933a93881d4b178196829da8f2cf0c979da7320b
SHA256 Checksum:	2c6c4c06faf763dcc5e36a8f02d7cf402291b7ec0bfa4b6c181bbffcdc27e451
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	30720
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	5.1
File Modification Date/Time:	07/26/2012

Windows 7

File Name

Software Version

File Version

Architecture

MFC42.dll.mui

6.6.4.0

6.06.8063.0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Microsoft (R) Visual C++
Software Version:	6.6.4.0
File Version:	6.06.8063.0
File Size:	31232
File Date:	04/12/2011
MD5 Checksum:	d6a0243b19c6be79e4d6657ea7d90876
SHA1 Checksum:	0e049b14935f8f499087cd40eb008056a8bdfa10
SHA256 Checksum:	24897a4f9dd130c6b6723bfac705a3453e276113855d4f6b85cb1a9b983451d2
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	30720
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	5.2
File Modification Date/Time:	04/12/2011

MFC42.dll.mui

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	31232
MD5 Checksum:	ca92bc3d49c73b4c61560cc4522d476d
SHA1 Checksum:	52e13380657f8701e0ae4bc78ebd462ffea2d0be
SHA256 Checksum:	2c46d4c1e377264c4b17bfcc373c6baede97dbe7a2d695f5735114a610e85890
CRC32:
File Directory Location:	C:\Windows\SysWOW64\en-US\

File Version, System, and Machine Information
There is no information available.

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Files Related to MFC42.dll.mui

MUI Files Related to MFC42.dll.mui

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msadcfr.dll.mui	Myriad User Instrument	Windows Vista	5632	C:\Windows\System32\wbem\Performance\
hdwwiz.cpl.mui	Add Hardware Control Panel Applet	Microsoft® Windows® Operating System (10.0.15063.0)	14848	C:\Windows\System32\Sysprep\Panther\
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