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efscore.dll.mui Informations - Download and Fix

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

efscore.dll.mui file EFS Core Library. 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 efscore.dll.mui related errors on your device. You can also download efscore.dll.mui file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7 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 7

File info

General information
Filename efscore.dll.mui
File extension MUI
Description EFS Core Library
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.)
efscore.dll.mui

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

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

efscore.dll.mui

Error

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

OK

Problems related to efscore.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 efscore.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.

efscore.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 efscore.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 efscore.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 efscore.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 efscore.dll.mui file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the efscore.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 efscore.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 efscore.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 efscore.dll.mui file

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of efscore.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\System32\en-US\
  • Windows 7: C:\Windows\System32\en-US\

If the steps did not solve your efscore.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 efscore.dll.mui
System Windows 10
File size 23040 bytes
Date 2017-03-18
File details
MD5 fb2de80281d8eb6acfd4b146b4386767
SHA1 1630e3af5739d378aa6acde14c009110250b2248
SHA256 5bb6f6fa925d45ed0b09515155ef1d926d300779163355e248fa80397e013e51
CRC32 31bc482a
Example file location C:\Windows\System32\en-US\
Filename efscore.dll.mui
System Windows 8.1
File size 20480 bytes
Date 2014-11-21
File details
MD5 5865de386c5645e473ae3d52be514085
SHA1 ab9d82464718c6d9252197b7639ef0d5b625e69c
SHA256 e7cf6046d780c91d856fc3538922694cb31bfb56cfb5b6b9b7b170bff7a607dc
CRC32 2bb562e9
Example file location C:\Windows\System32\en-US\
Filename efscore.dll.mui
System Windows 8
File size 20480 bytes
Date 2012-07-26
File details
MD5 6f54860207904cb800566759b36e72a3
SHA1 f0b490c384ab9d73970e718e7617b7837e5574c5
SHA256 424b6097336571a4c0fb7dd80d1a2845beb7c8b66d638bad13d1342167c64ccb
CRC32 bf1c633a
Example file location 1: C:\Windows\System32\en-US\
Filename efscore.dll.mui
System Windows 7
File size 20480 bytes
Date 2011-04-12
File details
MD5 1aad1941e7b3a6493eb62b958056d14c
SHA1 8b38a20fde8618294246d9ae80b7a34a31ba0078
SHA256 464f87b10a954c059d27a0c9ec53929f2d098ade727a509e3d41ec191d8ab14c
CRC32 0cd18399
Example file location C:\Windows\System32\en-US\
Filename efscore.dll.mui
System Windows 7
File size 20480 bytes
Date -0001-11-30
File details
MD5 d9f243fdb8b72b2ec0a58902c5deada9
SHA1 48f7e94594708417d15b47cb1ac88aad020e41f3
SHA256 5a5c52bad02ad95fcdad7d677cdbdf39034cc895ba22063daca6bb9bd42dc464
CRC32 bda6cabc
Example file location C:\Windows\System32\en-US\