Mrxsmb.sys.mui Errors: Download and Troubleshoot

Last Updated: 12/09/2023
[Average Article Time to Read: 4.7 minutes]

Windows NT SMB Minirdr files such as mrxsmb.sys.mui utilize the MUI file extension. This file is considered a Win32 DLL (Driver) file, and was first created by Microsoft for the Microsoft® Windows® Operating System software package.

mrxsmb.sys.mui was first released for Windows 8 Operating System on 08/01/2012 with Windows 8. On 07/29/2015, version 10.0.15063.0 (WinBuild.160101.0800) was released for Windows 10. mrxsmb.sys.mui is included in Windows 10, Windows 8.1, and Windows 8.

Below, you find comprehensive file information, instructions for simple MUI file troubleshooting, and list of free mrxsmb.sys.mui downloads for each available file version.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	mrxsmb.sys.mui
File Extension:	MUI file extension
Description:	Windows NT SMB Minirdr
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 mrxsmb.sys.mui Information

File Info	Description
File Size:	63 kB
File Modification Date/Time:	2017:03:18 05:02:46+00:00
File Inode Change Date/Time:	2017:11:05 07:07:54+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	0000:00:00 00:00:00
PE Type:	PE32
Linker Version:	14.10
Code Size:	0
Initialized Data Size:	64000
Uninitialized Data Size:	0
Entry Point:	0x0000
OS Version:	10.0
Image Version:	10.0
Subsystem Version:	6.0
Subsystem:	Windows GUI
File Version Number:	10.0.15063.0
Product Version Number:	10.0.15063.0
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:	Windows NT SMB Minirdr
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	MRxSmb.sys
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	MRXSMB.Sys.MUI
Product Name:	Microsoft® Windows® Operating System
Product Version:	10.0.15063.0

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

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What are mrxsmb.sys.mui Error Messages?

Dynamic Link Library mrxsmb.sys.mui Errors

mrxsmb.sys.mui is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like mrxsmb.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 mrxsmb.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 mrxsmb.sys.mui is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common mrxsmb.sys.mui errors include:

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

Your mrxsmb.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, mrxsmb.sys.mui file corruption could be caused from a power outage when loading Windows, system crash while loading mrxsmb.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 mrxsmb.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 mrxsmb.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 mrxsmb.sys.mui error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing mrxsmb.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 mrxsmb.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 mrxsmb.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 mrxsmb.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 mrxsmb.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 mrxsmb.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 mrxsmb.sys.mui file version. We maintain a comprehensive database of 100% malware-free mrxsmb.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 mrxsmb.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 8: C:\Windows\System32\drivers\en-US\
Windows 8.1: C:\Windows\System32\drivers\en-US\
Windows 10: 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 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve mrxsmb.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 mrxsmb.sys.mui Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying mrxsmb.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 mrxsmb.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 10

File Name

Software Version

File Version

Architecture

mrxsmb.sys.mui

10.0.15063.0

10.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	10.0.15063.0
File Version:	10.0.15063.0 (WinBuild.160101.0800)
File Size:	64512
File Date:	03/18/2017
MD5 Checksum:	830bc3638bf2727b151a4c5a09bafbcf
SHA1 Checksum:	a2d64600bf3aff30267b2d917af7a8d79b217b30
SHA256 Checksum:	b3ecc0c2c816d312259232b5e8db894155b62d6baff0d7d8481c0c12b3cdc6ae
CRC32:
File Directory Location:	C:\Windows\System32\drivers\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	64000
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.0
File Modification Date/Time:	03/18/2017

Windows 8.1

File Name

Software Version

File Version

Architecture

mrxsmb.sys.mui

6.3.9600.16384

6.3.9600.16384 (winblue_rtm.130821-1623)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Microsoft® Windows® Operating System
Software Version:	6.3.9600.16384
File Version:	6.3.9600.16384 (winblue_rtm.130821-1623)
File Size:	55296
File Date:	11/21/2014
MD5 Checksum:	d0ce1060c18401b68d3b83c68fb5a4b5
SHA1 Checksum:	a7c9cd12d1d341613e9ece459eec6c661307ae59
SHA256 Checksum:	cbab37877ad55497d67eead235240208bdf9fe4a13fe451f36d4eecf6f591402
CRC32:
File Directory Location:	C:\Windows\System32\drivers\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	54784
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.0
File Modification Date/Time:	11/21/2014

Windows 8

File Name

Software Version

File Version

Architecture

mrxsmb.sys.mui

6.2.9200.16384

6.2.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft® Windows® Operating System
Software Version:	6.2.9200.16384
File Version:	6.2.9200.16384 (win8_rtm.120725-1247)
File Size:	18944
File Date:	07/26/2012
MD5 Checksum:	fa55772af01ad753d3c214e348b0e12c
SHA1 Checksum:	9b68b6dd12fc7072d1733faa14620abd438d827f
SHA256 Checksum:	060a3951dc09f17894b187eac8eb1369dc306af397533b56ecf49f4596c5e28c
CRC32:
File Directory Location:	C:\Windows\System32\drivers\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	18432
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	5.1
File Modification Date/Time:	07/26/2012

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Files Related to mrxsmb.sys.mui

MUI Files Related to mrxsmb.sys.mui

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
qwavedrv.sys.mui	Myriad User Instrument	Windows Vista	3072	C:\Windows\Panther\UnattendGC\
httpapi.dll.mui	HTTP Protocol Stack API	Microsoft® Windows® Operating System (6.1.7600.16385)	6656	C:\WINDOWS\Tasks\
rasgcw.dll.mui	Myriad User Instrument	Windows Vista	53248	C:\Windows\System32\Sysprep\Panther\
CNBP_174.DLL.mui	Canon Inkjet Printer Driver	Canon Inkjet Printer Driver (1.00.2.82)	2048	C:\Users\Tester\AppData\Local\Packages\Microsof...
eqossnap.dll.mui	EQoS Snapin extension	Microsoft® Windows® Operating System (6.1.7600.16385)	15360	C:\WINDOWS\Tasks\

Other Files Related to mrxsmb.sys.mui

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
WWAN_profile_v1.xsd	XML Schema Definition	Windows 8.1	6201	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 10	6201	C:\Windows\L2Schemas\
WLAN_profile_v1.xsd	XML Schema Definition	Windows 8	15591	C:\Windows\L2Schemas\
WLAN_profile_v1.xsd	XML Schema Definition	Windows 8.1	16142	C:\Windows\L2Schemas\
p2057.ngr	NEPLAN Graphic Data	Windows Vista	3188068	C:\Windows\Speech\Engines\SR\en-GB\

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