Troubleshoot MMDevAPI.dll.mui Errors and Download File

Sometimes Windows system displays error messages regarding corrupted or missing MMDevAPI.dll.mui files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent MMDevAPI.dll.mui file can therefore effect in failed execution of the started process.

MMDevAPI.dll.mui file MMDevice API. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of MMDevAPI.dll.mui related errors on your device. You can also download MMDevAPI.dll.mui file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista

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Fix MMDevAPI.dll.mui errors

1 Information about MMDevAPI.dll.mui file
2 Errors related to MMDevAPI.dll.mui file
3 How to fix MMDevAPI.dll.mui related errors?

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download MMDevAPI.dll.mui

4.1 List of MMDevAPI.dll.mui file versions

File info

General information
Filename	MMDevAPI.dll.mui
File extension	MUI
Description	MMDevice API

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Dynamic link library
System	Windows NT 32-bit
Copyrights	© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	English (U.S.)

Most common MMDevAPI.dll.mui file related problems

There are various types of errors related to MMDevAPI.dll.mui file. MMDevAPI.dll.mui file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to MMDevAPI.dll.mui file. If you encounter one listed below (or similar), please consider the following suggestions.

MMDevAPI.dll.mui is corrupted
MMDevAPI.dll.mui cannot be located
Runtime Error - MMDevAPI.dll.mui
MMDevAPI.dll.mui file error
MMDevAPI.dll.mui file cannot be loaded. Module was not found
cannot register MMDevAPI.dll.mui file:
MMDevAPI.dll.mui file could not be loaded
MMDevAPI.dll.mui file doesn't exist

MMDevAPI.dll.mui

Application could not be started because MMDevAPI.dll.mui file is missing. Reinstall the application to solve the problem.

Problems related to MMDevAPI.dll.mui can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing MMDevAPI.dll.mui file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

How to fix MMDevAPI.dll.mui errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

MMDevAPI.dll.mui file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with MMDevAPI.dll.mui file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Installing relevant Microsoft Windows patches and updates may solve your problems related to MMDevAPI.dll.mui file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of MMDevAPI.dll.mui or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to MMDevAPI.dll.mui file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the MMDevAPI.dll.mui file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the MMDevAPI.dll.mui file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the MMDevAPI.dll.mui file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace MMDevAPI.dll.mui file

The last solution is to manually download and replace MMDevAPI.dll.mui file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded MMDevAPI.dll.mui file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of MMDevAPI.dll.mui file example directory paths.

Windows 10: C:\Windows\System32\en-US\
Windows 8.1: C:\Windows\System32\en-US\
Windows 8: 1: C:\Windows\System32\en-US\
Windows 7: C:\Windows\SysWOW64\en-US\
Windows 7: C:\Windows\SysWOW64\en-US\
Windows Vista: ---
Windows Vista: ---

If the steps did not solve your MMDevAPI.dll.mui file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename MMDevAPI.dll.mui

System Windows 10

File size 2560 bytes

Date 2017-03-18

Download

File details
	MD5	8c64338da16dab92561546de09a40b89
	SHA1	7fe2ec8c4558629e9448b0e28c48154ef5fb37de
	SHA256	0a7ab2b56ab705c028068e3cc47cecdd58fe4f74994cbdf71cbd56a92a4c648d
	CRC32	da86234d
	Example file location	C:\Windows\System32\en-US\

Filename MMDevAPI.dll.mui

System Windows 8.1

File size 2048 bytes

Date 2014-11-21

Download

File details
	MD5	a195a604ecedc14d1e6258f299a29285
	SHA1	cf509caf390c79cef45b607af729c6247d57e264
	SHA256	cd68abd34f53a7093e9c0296f174356990020a4b6ea244673f17bce0656cb9cd
	CRC32	04976cdd
	Example file location	C:\Windows\System32\en-US\

Filename MMDevAPI.dll.mui

System Windows 8

File size 2048 bytes

Date 2012-07-26

Download

File details
	MD5	8b320d9cd743f674a691732d3105583f
	SHA1	925b76eec33e79e86641ad08c4d482186cb8af49
	SHA256	293f3d11c1ca4e7ccce62abc66f67d8ed74242088d81fa76b35d5b2b8a22b279
	CRC32	dcff80f3
	Example file location	1: C:\Windows\System32\en-US\

Filename MMDevAPI.dll.mui

System Windows 7

File size 2048 bytes

Date 2011-04-12

Download

File details
	MD5	45aeb2fe679450dadcac27668c47ac46
	SHA1	a590f3bd4eb64d0c27f8cf33fbb9dd2352649307
	SHA256	566d0a8b8ebf931b709fddc4af59cdc6b846982eaa66be435941d7c4482b0365
	CRC32	ff4be860
	Example file location	C:\Windows\SysWOW64\en-US\

Filename MMDevAPI.dll.mui

System Windows 7

File size 2048 bytes

Date -0001-11-30

Download

File details
	MD5	e0ad091b785eb541370660b0c3a4dcc4
	SHA1	141b4ff8b40e61724c34d7dcbdb0b15fdded3f61
	SHA256	2ec675032df9769e69d9aeb103fa52c2a87f7eb400b7b78721c3d41b2150f3e5
	CRC32	d202a95c
	Example file location	C:\Windows\SysWOW64\en-US\

Filename MMDevAPI.dll.mui

System Windows Vista

File size 2048 bytes

Date 2006-11-02

Download

File details
	MD5	6ea471acfb333db4ace09cad5660cc19
	SHA1	9a8eb4bf904020d6e9c38856a219c49e290083ed
	SHA256	b0c6619022ba0567d79ae04f9b30bf2b28fb540200597d5d2c7c76687ec114f0
	CRC32	d3c04913
	Example file location	---

Filename MMDevAPI.dll.mui

System Windows Vista

File size 2560 bytes

Date -0001-11-30

Download

File details
	MD5	cd5622760da7b442261c9571c07d63c7
	SHA1	63ab26302781f16d889d2c21a962080cfff3e160
	SHA256	7a2b094502e3a1a8100922280a5d141dbbc9957dc3e0700f3b29f5c745c3203c
	CRC32	175fd1e8
	Example file location	---