How to Download, Fix, and Update Dot3api.dll.mui

Last Updated: 11/26/2023
[Average Read Time: 4.5 minutes]

802.3 Autoconfiguration API files such as dot3api.dll.mui utilize the MUI file extension. This file is considered a Win32 DLL (Dynamic link library) file, and was first created by Microsoft for the Microsoft® Windows® Operating System software package.

dot3api.dll.mui was first released for Windows Vista Operating System on 11/08/2006 with Windows Vista. The latest file update released for Windows 10 was on 07/29/2015 [file version 10.0.15063.0 (WinBuild.160101.0800)]. dot3api.dll.mui is included in Windows 10, Windows 8.1, and Windows 8.

This article discusses complete file details, MUI file troubleshooting instructions for problems with dot3api.dll.mui, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	dot3api.dll.mui
File Extension:	MUI file extension
Description:	802.3 Autoconfiguration API
Object File Type:	Dynamic link library
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 dot3api.dll.mui Information

File Info	Description
File Size:	3.0 kB
File Modification Date/Time:	2017:03:18 05:00:20+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:	2560
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:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	802.3 Autoconfiguration API
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	dot3api.dll
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	dot3api.dll.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 dot3api.dll.mui Error Messages?

Dynamic Link Library dot3api.dll.mui Errors

dot3api.dll.mui is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like dot3api.dll.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 dot3api.dll.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 dot3api.dll.mui is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common dot3api.dll.mui errors include:

Access Violation at address - dot3api.dll.mui.
dot3api.dll.mui could not be found.
Cannot find C:\Windows\System32\en-US\dot3api.dll.mui.
Cannot register dot3api.dll.mui.
Cannot start Windows. A required component is missing: dot3api.dll.mui. Please install Windows again.
Failed to load dot3api.dll.mui.
The application has failed to start because dot3api.dll.mui was not found.
The file dot3api.dll.mui is missing or corrupt.
This application failed to start because dot3api.dll.mui was not found. Re-installing the application may fix this problem.

Your dot3api.dll.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, dot3api.dll.mui file corruption could be caused from a power outage when loading Windows, system crash while loading dot3api.dll.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 dot3api.dll.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 dot3api.dll.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 dot3api.dll.mui error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing dot3api.dll.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 dot3api.dll.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 dot3api.dll.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 dot3api.dll.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 dot3api.dll.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 dot3api.dll.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 dot3api.dll.mui file version. We maintain a comprehensive database of 100% malware-free dot3api.dll.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 dot3api.dll.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\en-US\
Windows Vista: C:\Windows\SysWOW64\en-US\
Windows 7: C:\Windows\SysWOW64\en-US\
Windows 7: C:\Windows\System32\en-US\
Windows 8: C:\Windows\System32\en-US\
Show 2 more directories +

Windows 8.1: C:\Windows\System32\en-GB\
Windows 10: C:\Windows\System32\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 dot3api.dll.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 dot3api.dll.mui Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying dot3api.dll.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 dot3api.dll.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

dot3api.dll.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:	3072
File Date:	03/18/2017
MD5 Checksum:	fe76b1f18517b997f5fe1f0d1a53392a
SHA1 Checksum:	7a4e4713ec8f1d5d7a554ef4e6f7afa3b4c81147
SHA256 Checksum:	7886c241d2a4bd5b1036089ef10c1825e85e93fedbb435609c525c024fb4d258
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	2560
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 Vista

File Name

Software Version

File Version

Architecture

dot3api.dll.mui

6.0.6000.16386

6.0.6000.16386 (vista_rtm.061101-2205)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Microsoft® Windows® Operating System
Software Version:	6.0.6000.16386
File Version:	6.0.6000.16386 (vista_rtm.061101-2205)
File Size:	2560
File Date:	11/02/2006
MD5 Checksum:	7c3d90425cc1302c2f563a8dfad0353e
SHA1 Checksum:	46e6328093bb01c4f4b621e3b1f99a0e6efd6c68
SHA256 Checksum:	2b6f31e98631cd94cd60cb293aac498125cef8684b017798faca48310092f1c3
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.0
Initialized Data Size:	2048
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	5.2
File Modification Date/Time:	11/02/2006

dot3api.dll.mui

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	3072
MD5 Checksum:	781ac37e2b3ed2bc7ce6f477a38c8930
SHA1 Checksum:	28a8bcf1fe9aab325ab821cf04de14a67827acc8
SHA256 Checksum:	8c807d17d1a76236dee3b99b59f6aeba012a65349e93e16222888f518e03a8ae
CRC32:
File Directory Location:	C:\Windows\SysWOW64\en-US\

File Version, System, and Machine Information
There is no information available.

Windows 8.1

File Name

Software Version

File Version

Architecture

dot3api.dll.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:	2560
File Date:	11/21/2014
MD5 Checksum:	725edf95d365f4f77870067a6e4dbb41
SHA1 Checksum:	031d40f40110ca1574bcac848e0dcab5d2dc02a4
SHA256 Checksum:	7a010be1ab5139dcc056b1219d351c955507e721f9bb033af37f89daaf516736
CRC32:
File Directory Location:	C:\Windows\System32\en-GB\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	2048
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

dot3api.dll.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:	2560
File Date:	07/26/2012
MD5 Checksum:	b8fd70c5bd69b926ccda90825d11250c
SHA1 Checksum:	3e280ada1fd35da0cb4398f31093b28c8a0bfb44
SHA256 Checksum:	53830a4a03af2f941076764031fe38ddfa3a820aff34c1c1038d318d8823680b
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	2048
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

Windows 7

File Name

Software Version

File Version

Architecture

dot3api.dll.mui

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	2560
MD5 Checksum:	9746debb189fbd2ed5f23b469db78a41
SHA1 Checksum:	302c547186f7d0d9f809ac5716656f85b1afa440
SHA256 Checksum:	24a9fc1ddcb2ac1d5e6a9cc6a6fc75407076fa3c77a7d463f386f06408591357
CRC32:
File Directory Location:	C:\Windows\SysWOW64\en-US\

File Version, System, and Machine Information
There is no information available.

dot3api.dll.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:	2560
File Date:	04/12/2011
MD5 Checksum:	3d98095d87b358a5e20f6548bf1d74e6
SHA1 Checksum:	174a431c1db9cfc96242d62849d7e3a43f6930bf
SHA256 Checksum:	745201c745f9d6e06977b72ec25f85cb53e92d08c1b132c2d27447bf13f8447a
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	2048
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 dot3api.dll.mui

MUI Files Related to dot3api.dll.mui

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
ipmiprr.dll.mui	IPMI Provider Resource	Microsoft® Windows® Operating System (6.2.9200.16384)	3584	C:\Windows\System32\
msprivs.dll.mui	Myriad User Instrument	Windows 7	4608	C:\$WINDOWS.~BT\Sources\Boot\PXE\pt-PT\
rasdial.exe.mui	Remote Access Command Line Dial UI	Microsoft® Windows® Operating System (10.0.15063.0)	4608	C:\Windows\
TabSvc.dll.mui	Microsoft Touch Keyboard and Handwriting Panel Service	Microsoft® Windows® Operating System (6.3.9600.16384)	2560	C:\WINDOWS\Tasks\
xwtpw32.dll.mui	Extensible Wizard Type Plugin for Win32	Microsoft® Windows® Operating System (6.0.6000.16386)	2560	C:\Windows\Logs\DPX\

Other Files Related to dot3api.dll.mui

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
OneX_v1.xsd	XML Schema Definition	Windows XP	5957	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 10	6201	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 7	15591	C:\Windows\L2Schemas\
WLAN_policy_v1.xsd	XML Schema Definition	Windows Vista	6446	C:\Windows\L2Schemas\

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