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Download and Fix pci.sys.mui

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

pci.sys.mui file NT Plug and Play PCI Enumerator. 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 pci.sys.mui related errors on your device. You can also download pci.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
User popularity

Fix pci.sys.mui errors

File info

General information
Filename pci.sys.mui
File extension MUI
Description NT Plug and Play PCI Enumerator
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.)
pci.sys.mui

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

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

pci.sys.mui

Error

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

OK

Problems related to pci.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 pci.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.

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of pci.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 pci.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 pci.sys.mui
System Windows 10
File size 8704 bytes
Date 2017-03-18
Download
File details
MD5 629e6ff74fa6b111cf0d2033ed495f8c
SHA1 5ed898954a19748fc8413424b4a2ae4a97dbf7e8
SHA256 d5c3196edf159bcf827177e7b57474b0c5fa48f71e4fe907445afe71d2cd02ec
CRC32 97b4247c
Example file location C:\Windows\System32\drivers\en-US\
Filename pci.sys.mui
System Windows 8.1
File size 8192 bytes
Date 2014-11-21
Download
File details
MD5 6cdb4c7ae4ea0337a3072f14817c67f4
SHA1 466f43891012e85689f2965a77f93f3584368451
SHA256 ffe3b5463c6bcf974ba7ef334eedca59f36d323ec8cf1a132f9415ece3774cba
CRC32 e8a1b0f0
Example file location C:\Windows\System32\drivers\en-US\
Filename pci.sys.mui
System Windows 8
File size 8192 bytes
Date 2012-07-26
Download
File details
MD5 637aba6130355d6e9f189e988078ee80
SHA1 a889c545c043b540cdd693d745124df911d5899c
SHA256 85f8489cee555f1514da8f7480e2beca910f552ccd18183bc42b97b9149ebc05
CRC32 5416c56d
Example file location 1: C:\Windows\System32\drivers\en-US\
Filename pci.sys.mui
System Windows 7
File size 8192 bytes
Date 2011-04-12
Download
File details
MD5 852a0e7e335d7403456c5493c3602dfa
SHA1 82872afc203dcf911b16c071d86cef59ff26a30d
SHA256 d62b7241e1f4133f3ba55c3f3f14dd33df784f221d21111684628d368997f053
CRC32 4d4df109
Example file location C:\Windows\System32\drivers\en-US\
Filename pci.sys.mui
System Windows Vista
File size 8192 bytes
Date 2006-11-02
Download
File details
MD5 271c8fe2afda86375cbe071a7e8e787d
SHA1 769f1efe19a72a80d30f67902b5e5fb537f18f23
SHA256 54ab7715cb9b78b473fc7ed93e8a8a7e5d4dad4dac876c60f496c8bad07133f6
CRC32 d4df6998
Example file location C:\Windows\System32\drivers\en-US\