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Troubleshoot wuaueng.dll.mui Errors and Download File

Sometimes Windows system displays error messages regarding corrupted or missing wuaueng.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 wuaueng.dll.mui file can therefore effect in failed execution of the started process.

wuaueng.dll.mui file Windows Update Agent. 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 wuaueng.dll.mui related errors on your device. You can also download wuaueng.dll.mui file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista devices which will (most probably) allow you to solve the problem.

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

File info

General information
Filename wuaueng.dll.mui
File extension MUI
Description Windows Update Agent
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.)
wuaueng.dll.mui

There are various types of errors related to wuaueng.dll.mui file. wuaueng.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 wuaueng.dll.mui file. If you encounter one listed below (or similar), please consider the following suggestions.

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

wuaueng.dll.mui

Error

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

OK

Problems related to wuaueng.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 wuaueng.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.

wuaueng.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

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with wuaueng.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.

Windows Update

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

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. 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 wuaueng.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

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 wuaueng.dll.mui file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the wuaueng.dll.mui file with properly working version. To use the tool:

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

Step 4: Restoring Windows system

Windows Recovery

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

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

If all the above-mentioned methods failed and the wuaueng.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 wuaueng.dll.mui file

The last solution is to manually download and replace wuaueng.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 wuaueng.dll.mui file.

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

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

If the steps did not solve your wuaueng.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 wuaueng.dll.mui
System Windows 10
File size 12800 bytes
Date 2017-03-18
File details
MD5 abffe70dd96d1643327bcf9c6813100c
SHA1 dc8a8c6f883f026a72939d63150ef92e03fa29b4
SHA256 c3dd7c8368440bfebf70bba54b98acd849d4cba309367dc0cdf9ed039090cbf5
CRC32 e9be603a
Example file location C:\Windows\System32\en-US\
Filename wuaueng.dll.mui
System Windows 8.1
File size 12800 bytes
Date 2014-11-21
File details
MD5 b8fa872b11e1a05925269e33dc35bd5d
SHA1 7e23638655fb19fb48c1741f5a3d0c10f4e49da7
SHA256 d770e1403f3c283cfe8452edd9dc5af39dd4cc4cc84539c27e5358c7a30e5b44
CRC32 4b31a644
Example file location C:\Windows\System32\en-GB\
Filename wuaueng.dll.mui
System Windows 8
File size 12288 bytes
Date 2012-07-26
File details
MD5 79b5e03b89ec77eb96a61ec0ceaf3955
SHA1 04a794eaa66958795de3e600cd90506aea7e0820
SHA256 74ae1aa193540cf64fc221aaf0f4920347e5cc06986e34f795ff27972839c0ef
CRC32 872ca184
Example file location 1: C:\Windows\System32\en-GB\
Filename wuaueng.dll.mui
System Windows 7
File size 11264 bytes
Date 2011-04-12
File details
MD5 1ed7f54f41b7646407169a7ecf1149d6
SHA1 877aeb99611d23adaf5e0269c52ce2eef9f1a883
SHA256 f68d5690ec96844e8d8a64a877277e8a2d9d4ceb4ca9b6657189182ce5a8338e
CRC32 776696cd
Example file location C:\Windows\System32\en-US\
Filename wuaueng.dll.mui
System Windows Vista
File size 10240 bytes
Date 2008-01-21
File details
MD5 4582705599522c386de2061b8fd25152
SHA1 6ca77b097964b7fac8d8cd0111a31595405255ba
SHA256 bda8937e343d245559ce39e3c6da310161aa412cf2048a8fb242b60f8dfb7787
CRC32 7063fb8e
Example file location C:\Windows\System32\en-US\