Download Mp4sdecd.dll.mui and Troubleshoot Errors

Last Updated: 11/29/2023
[Time Needed for Reading: ~4-6 minutes]

mp4sdecd.dll.mui, also known as a Windows Media MPEG-4 S Video Decoder file, was created by Microsoft for the development of Microsoft® Windows® Operating System. MUI files fall under under the Win32 DLL (Dynamic link library) file type category.

The first version of mp4sdecd.dll.mui for Windows 8 was introduced on 08/01/2012 in Windows 8. The newest file release date for Windows 10 was 07/29/2015 [version 10.0.15063.0 (WinBuild.160101.0800)].

This article discusses complete file details, MUI file troubleshooting instructions for problems with mp4sdecd.dll.mui, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	mp4sdecd.dll.mui
File Extension:	MUI file extension
Description:	Windows Media MPEG-4 S Video Decoder
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® Windows® Operating System
Legal Copyright:	© Microsoft Corporation. All rights reserved.

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x0000

View Other mp4sdecd.dll.mui Information

File Info	Description
File Size:	3.5 kB
File Modification Date/Time:	2017:03:18 05:14:06+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:	3072
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:	10.0.15063.0
Product Version Number:	10.0.15063.0
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	Windows Media MPEG-4 S Video Decoder
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	mp4sdmod.dll
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	mp4sdmod.dll.mui
Product Name:	Microsoft® Windows® Operating System
Product Version:	10.0.15063.0

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

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What are mp4sdecd.dll.mui Error Messages?

Dynamic Link Library mp4sdecd.dll.mui Errors

mp4sdecd.dll.mui is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like mp4sdecd.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 mp4sdecd.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 mp4sdecd.dll.mui is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common mp4sdecd.dll.mui errors include:

Access Violation at address - mp4sdecd.dll.mui.
mp4sdecd.dll.mui could not be found.
Cannot find C:\Windows\System32\en-US\mp4sdecd.dll.mui.
Cannot register mp4sdecd.dll.mui.
Cannot start Windows. A required component is missing: mp4sdecd.dll.mui. Please install Windows again.
Failed to load mp4sdecd.dll.mui.
The application has failed to start because mp4sdecd.dll.mui was not found.
The file mp4sdecd.dll.mui is missing or corrupt.
This application failed to start because mp4sdecd.dll.mui was not found. Re-installing the application may fix this problem.

Your mp4sdecd.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, mp4sdecd.dll.mui file corruption could be caused from a power outage when loading Windows, system crash while loading mp4sdecd.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 mp4sdecd.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 mp4sdecd.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 mp4sdecd.dll.mui error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing mp4sdecd.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 mp4sdecd.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 mp4sdecd.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 mp4sdecd.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 mp4sdecd.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 mp4sdecd.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 mp4sdecd.dll.mui file version. We maintain a comprehensive database of 100% malware-free mp4sdecd.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 mp4sdecd.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 8: C:\Windows\System32\en-US\
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 mp4sdecd.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 mp4sdecd.dll.mui Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying mp4sdecd.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 mp4sdecd.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

mp4sdecd.dll.mui

10.0.15063.0

10.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	10.0.15063.0
File Version:	10.0.15063.0 (WinBuild.160101.0800)
File Size:	3584
File Date:	03/18/2017
MD5 Checksum:	38a4299382c053634096b706cac217ce
SHA1 Checksum:	bacc22b8f281be1570081f96209e50727c5c7f62
SHA256 Checksum:	ab1ef5e6be420c32e331a796245257b3c77433bb21ac53950078ef13f12dd710
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:	3072
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 8

File Name

Software Version

File Version

Architecture

mp4sdecd.dll.mui

6.2.9200.16384

6.2.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft® Windows® Operating System
Software Version:	6.2.9200.16384
File Version:	6.2.9200.16384 (win8_rtm.120725-1247)
File Size:	3072
File Date:	07/26/2012
MD5 Checksum:	90d5eaa5edee0d63cb9fdf71f9ee6138
SHA1 Checksum:	56f7863558d4a122d5861e5d388dfb65be46b256
SHA256 Checksum:	64af61d605c36f33565213e2a526991ee9fbdf272c7c8a92df0cf2af60dde520
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:	2560
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

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