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afd.sys.mui - How to Fix? Download Now

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

afd.sys.mui file Ancillary Function Driver for WinSock. 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 afd.sys.mui related errors on your device. You can also download afd.sys.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 afd.sys.mui
File extension MUI
Description Ancillary Function Driver for WinSock
Software
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
Details
MIME type application/octet-stream
File type Driver
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)
afd.sys.mui

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

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

afd.sys.mui

Error

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

OK

Problems related to afd.sys.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 afd.sys.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.

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

The last solution is to manually download and replace afd.sys.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 afd.sys.mui file.

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

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

If the steps did not solve your afd.sys.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 afd.sys.mui
System Windows 10
File size 22528 bytes
Date 2017-03-18
File details
MD5 2a844c5418d717f918633df0c6bf7a19
SHA1 c141d208c30f800aa4d4e669e0576908ffb40e2c
SHA256 0ee2730dbd1aef2ffbc0fd0fae8c36b168ce5d2a3299a2bf224e731593e5eae8
CRC32 3e313497
Example file location C:\Windows\System32\drivers\en-US\
Filename afd.sys.mui
System Windows 8.1
File size 21504 bytes
Date 2014-11-21
File details
MD5 3606d04bc7e6e305737bec91cc8a6d0d
SHA1 04435891e4714fd36cabb2295e5a53826fe944ae
SHA256 42bd4fad9eef7cdd296ff7f20379d11f7c928261817104628f13e4554bafefcb
CRC32 44499dc6
Example file location C:\Windows\System32\drivers\en-US\
Filename afd.sys.mui
System Windows 8
File size 18432 bytes
Date 2012-07-26
File details
MD5 cfafe3d63c310501505f44926c245a4f
SHA1 3e6f3586c9508b5a553b6d393dc39b1259217f81
SHA256 8b4a173a64f597bea0e974dd555b3223aa813e7f487ceddba288e87c74a8b4c8
CRC32 43c0d3d0
Example file location 1: C:\Windows\System32\drivers\en-US\
Filename afd.sys.mui
System Windows 7
File size 14848 bytes
Date 2011-04-12
File details
MD5 e6a5e6ad9c6f4f30061068f321c0ec5a
SHA1 00a0c9299f61adc340a5bec0bdf7f51f1d4c432e
SHA256 ea1c26bb9029a013daee92906f54001f1c403a73c0ffd3fee2f79b007cc12fb9
CRC32 1344337d
Example file location C:\Windows\System32\drivers\en-US\
Filename afd.sys.mui
System Windows Vista
File size 8192 bytes
Date 2006-11-02
File details
MD5 a9eb14594e52f176f33518b81f694abc
SHA1 3d9add4130a8d630fa72b0781bdb0f73705b3877
SHA256 5b9016a998ce76e36b6e46eb3c87d68ec60807931e486cbe3dfce3b0a4697ec5
CRC32 a32b312b
Example file location C:\Windows\System32\drivers\en-US\