How to Fix Issues with Mpio.sys.mui (Free Download)

Last Updated: 11/27/2023
[Time to Read Article: 5 minutes]

mpio.sys.mui, also known as a MultiPath Support Bus-Driver file, was created by Microsoft for the development of Microsoft® Windows® Operating System. MUI files fall under under the Win64 DLL (Driver) file type category.

The first version of mpio.sys.mui for Windows Vista was introduced on 11/08/2006 in Windows Vista. The latest file version for Windows 7 is v6.1.7600.16385 (win7_rtm.090713-1255) released on 07/22/2009.

Please continue reading to find your correct mpio.sys.mui file version download (free), detailed file information, and MUI file troubleshooting instructions.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	mpio.sys.mui
File Extension:	MUI file extension
Description:	MultiPath Support Bus-Driver
Object File Type:	Driver
File Operating System:	Windows NT 32-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	Microsoft® Windows® Operating System
Legal Copyright:	© Microsoft Corporation. All rights reserved.

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x0000

View Other mpio.sys.mui Information

File Info	Description
File Size:	26 kB
File Modification Date/Time:	2011:04:12 07:36:30+00:00
File Inode Change Date/Time:	2017:11:05 07:07:16+00:00
File Type:	Win64 DLL
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	2009:07:14 00:01:21+00:00
PE Type:	PE32+
Linker Version:	9.0
Code Size:	0
Initialized Data Size:	26112
Uninitialized Data Size:	0
Entry Point:	0x0000
OS Version:	6.1
Image Version:	6.1
Subsystem Version:	5.2
Subsystem:	Windows GUI
File Version Number:	6.1.7600.16385
Product Version Number:	6.1.7600.16385
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Driver
File Subtype:	7
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	MultiPath Support Bus-Driver
File Version:	6.1.7600.16385 (win7_rtm.090713-1255)
Internal Name:	mpio.sys
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	mpio.sys.mui
Product Name:	Microsoft® Windows® Operating System
Product Version:	6.1.7600.16385

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are mpio.sys.mui Error Messages?

Dynamic Link Library mpio.sys.mui Errors

mpio.sys.mui is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like mpio.sys.mui, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like sapisvr.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same mpio.sys.mui file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared MUI file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when mpio.sys.mui is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common mpio.sys.mui errors include:

Access Violation at address - mpio.sys.mui.
mpio.sys.mui could not be found.
Cannot find C:\Windows\System32\drivers\en-US\mpio.sys.mui.
Cannot register mpio.sys.mui.
Cannot start Windows. A required component is missing: mpio.sys.mui. Please install Windows again.
Failed to load mpio.sys.mui.
The application has failed to start because mpio.sys.mui was not found.
The file mpio.sys.mui is missing or corrupt.
This application failed to start because mpio.sys.mui was not found. Re-installing the application may fix this problem.

Your mpio.sys.mui file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Windows), or deleted by a malware infection. Furthermore, mpio.sys.mui file corruption could be caused from a power outage when loading Windows, system crash while loading mpio.sys.mui, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix mpio.sys.mui Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your mpio.sys.mui issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
When you see the search box, type "System Restore" and press "ENTER".
In the search results, find and click System Restore.
Please enter the administrator password (if applicable / prompted).
Follow the steps in the System Restore Wizard to choose a relevant restore point.
Restore your computer to that backup image.

If the Step 1 fails to resolve the mpio.sys.mui error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing mpio.sys.mui file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt mpio.sys.mui files (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "cmd" but DO NOT PRESS "ENTER".
Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
You'll be prompted with a permission dialog box.
In the box, click "YES".
You should have a black screen with a blinking cursor.
In that black screen, type "sfc /scannow" and hit "ENTER".
SFC will begin scanning for mpio.sys.mui issues and any other system file problems.
Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

If this Step 2 fails as well, please proceed to the Step 3 below.

sfc /scannow

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many mpio.sys.mui error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

Hit the Windows Start button
In the search box, type "Update" and press "ENTER".
In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
If updates are available for download, click "Install Updates".
After the update is completed, restart your PC.

If Windows Update failed to resolve the mpio.sys.mui error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your mpio.sys.mui File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate mpio.sys.mui file version. We maintain a comprehensive database of 100% malware-free mpio.sys.mui files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download mpio.sys.mui Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy the file into the appropriate directory for your Windows version:

Windows Vista: C:\Windows\System32\drivers\en-US\
Windows 7: C:\Windows\System32\drivers\en-US\

Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 7.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve mpio.sys.mui problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download mpio.sys.mui Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying mpio.sys.mui to your appropriate Windows system directory. Microsoft typically does not release Windows MUI files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing mpio.sys.mui and all other MUI files for Windows. An incorrectly installed MUI file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows Vista

File Name

Software Version

File Version

Architecture

mpio.sys.mui

6.0.6001.18000

6.0.6001.18000 (longhorn_rtm.080118-1840)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Microsoft® Windows® Operating System
Software Version:	6.0.6001.18000
File Version:	6.0.6001.18000 (longhorn_rtm.080118-1840)
File Size:	19968
File Date:	01/21/2008
MD5 Checksum:	9383a6cc8d4917a8499628bed30f92d3
SHA1 Checksum:	830ee57a81ff545e9996b156ec88169fe8d58faa
SHA256 Checksum:	16c783ece98d48284ab0af19d29fe7a199b9b95cd8ff8aac557e5035d434d78c
CRC32:
File Directory Location:	C:\Windows\System32\drivers\en-US\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.0
Initialized Data Size:	19456
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	5.2
File Modification Date/Time:	01/21/2008

Windows 7

File Name

Software Version

File Version

Architecture

mpio.sys.mui

6.1.7600.16385

6.1.7600.16385 (win7_rtm.090713-1255)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Microsoft® Windows® Operating System
Software Version:	6.1.7600.16385
File Version:	6.1.7600.16385 (win7_rtm.090713-1255)
File Size:	26624
File Date:	04/12/2011
MD5 Checksum:	5824985855e951fd7081eda73014159f
SHA1 Checksum:	0caf4729559069694541d8f61c1e901b35c66b7b
SHA256 Checksum:	3c2d89790933305681765deeafd8c56a0a1c59231b5ef2aa660b69c62ed11fdb
CRC32:
File Directory Location:	C:\Windows\System32\drivers\en-US\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	26112
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	5.2
File Modification Date/Time:	04/12/2011

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Files Related to mpio.sys.mui

MUI Files Related to mpio.sys.mui

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
rmapi.dll.mui	Radio Manager API	Microsoft® Windows® Operating System (6.3.9600.16384)	2560	C:\Windows\System32\LogFiles\WMI\RtBackup\
DefaultPrinterProvider...	Microsoft Windows Default Printer Provider	Microsoft® Windows® Operating System (10.0.15063.0)	2560	C:\Windows\System32\LogFiles\WMI\RtBackup\
msctfuimanager.dll.mui	Microsoft UIManager DLL	Microsoft® Windows® Operating System (10.0.15063.0)	9216	C:\Windows\System32\en-US\
memtest.exe.mui	Myriad User Instrument	Windows 10	45472	C:\Users\Bill\AppData\Roaming\Microsoft\Windows...
AppxProvider.dll.mui	DISM App Package (.appx) Provider	Microsoft® Windows® Operating System (6.2.9200.16384)	14336	C:\Windows\System32\LogFiles\WMI\RtBackup\

Other Files Related to mpio.sys.mui

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
OneX_v1.xsd	XML Schema Definition	Windows 8	5957	C:\Windows\L2Schemas\
OneX_v1.xsd	XML Schema Definition	Windows Vista	5957	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 7	7504	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 8.1	7548	C:\Windows\L2Schemas\
WLAN_profile_v1.xsd	XML Schema Definition	Windows XP	15263	C:\Windows\L2Schemas\

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