Repair Wsepno.dll.mui Issues (How to Download and Fix)

Last Updated: 11/29/2023
[Average Read Time: 4.5 minutes]

Profile notification support for Windows Search Service files, such as wsepno.dll.mui, are considered a type of Win32 DLL (Dynamic link library) file. They are associated with the MUI file extension, developed by Microsoft for Windows® Search.

The release of wsepno.dll.mui introduced for Windows was on 11/08/2006 in Windows Vista. On 07/29/2015, version 7.0.15063.0 (WinBuild.160101.0800) was released for Windows 10. wsepno.dll.mui is included with Windows 10, Windows 8.1, and Windows 8.

Continue reading below to discover detailed file information, MUI file troubleshooting, and free downloads of several versions of wsepno.dll.mui.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	wsepno.dll.mui
File Extension:	MUI file extension
Description:	Profile notification support for Windows Search Service
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:	Windows® Search
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 wsepno.dll.mui Information

File Info	Description
File Size:	4.5 kB
File Modification Date/Time:	2017:03:18 05:04:44+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:	4096
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:	7.0.15063.0
Product Version Number:	7.0.15063.0
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:	Profile notification support for Windows Search Service
File Version:	7.0.15063.0 (WinBuild.160101.0800)
Internal Name:	PROFNOTIFY
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	PROFNOTIFY.DLL.MUI
Product Name:	Windows® Search
Product Version:	7.0.15063.0

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

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What are wsepno.dll.mui Error Messages?

Dynamic Link Library wsepno.dll.mui Errors

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

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

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

Step 2: Run SFC (System File Checker) to restore the corrupt or missing wsepno.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 wsepno.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 wsepno.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 wsepno.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 wsepno.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 wsepno.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 wsepno.dll.mui file version. We maintain a comprehensive database of 100% malware-free wsepno.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 wsepno.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\System32\en-US\
Windows 8: C:\Windows\System32\en-US\
Windows 8.1: C:\Windows\System32\en-US\
Show 1 more directory +

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 wsepno.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 wsepno.dll.mui Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying wsepno.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 wsepno.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

wsepno.dll.mui

7.0.15063.0

7.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Windows® Search
Software Version:	7.0.15063.0
File Version:	7.0.15063.0 (WinBuild.160101.0800)
File Size:	4608
File Date:	03/18/2017
MD5 Checksum:	0935910bd6693e9ff752e3c10fe1af75
SHA1 Checksum:	6386c97ae9a65fbda57ec9c71a79a61d31bf6d1c
SHA256 Checksum:	be05085970f5189cbec0c0a4e5e264bc9e0c6c667a5fc13c9a0c07fb54786c44
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:	4096
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

wsepno.dll.mui

7.0.6002.18005

7.00.6002.18005 (lh_sp2rtm.090410-1830)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Windows® Search
Software Version:	7.0.6002.18005
File Version:	7.00.6002.18005 (lh_sp2rtm.090410-1830)
File Size:	3584
File Date:	04/11/2009
MD5 Checksum:	ca5030c823f2242ded5d85a6a2c06a59
SHA1 Checksum:	ab6cb58394945cdb76cc46577757ae6831033a0f
SHA256 Checksum:	e32470975fc5c7bdecf977cdd01acd1853d4ae7262163ba23d3101075c3b1cc8
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:	3072
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	5.2
File Modification Date/Time:	04/11/2009

wsepno.dll.mui

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	4096
MD5 Checksum:	a50d10d6b7371e2ad99d0d5fecdee1d4
SHA1 Checksum:	f5629932b0f8265a937a053abe7e629bb0557e62
SHA256 Checksum:	c24b4c83655589d9059fe4aeede5be04de183bf86748cda58a7a6cce975f1217
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

wsepno.dll.mui

7.0.9600.16384

7.00.9600.16384 (winblue_rtm.130821-1623)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Windows® Search
Software Version:	7.0.9600.16384
File Version:	7.00.9600.16384 (winblue_rtm.130821-1623)
File Size:	4096
File Date:	11/21/2014
MD5 Checksum:	74071fb528966dd130b47a4d70695d73
SHA1 Checksum:	43173c1d55ed117a1996dafb137121ccb9f21baa
SHA256 Checksum:	de391839815f4280e7cad243eca4144e3783b656cf5014c9a7a25e741368f8d1
CRC32:
File Directory Location:	C:\Windows\System32\en-US\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	3584
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

wsepno.dll.mui

7.0.9200.16384

7.00.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Windows® Search
Software Version:	7.0.9200.16384
File Version:	7.00.9200.16384 (win8_rtm.120725-1247)
File Size:	3584
File Date:	07/26/2012
MD5 Checksum:	9d67cd2d0b71a2f4e00048a01377d520
SHA1 Checksum:	0b3a68aa32e3cb216beb5b0639ec673b43fd1a42
SHA256 Checksum:	d0ff58ec83a09eb038a08d01994bf9cbda3dd08b711370158d30217bfc4b9ebe
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:	3072
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

wsepno.dll.mui

7.0.7600.16385

7.00.7600.16385 (win7_rtm.090713-1255)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Windows® Search
Software Version:	7.0.7600.16385
File Version:	7.00.7600.16385 (win7_rtm.090713-1255)
File Size:	3584
File Date:	04/12/2011
MD5 Checksum:	96cc1b03d4826cb90eca7beed2c8e36a
SHA1 Checksum:	30d00d8bd18203b63000fcbd052f5e5e26cdd89e
SHA256 Checksum:	7ec801bdbee1551c328245bb189e6cc2dac5276ef83de139939b8aaab9bb9fb9
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:	3072
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 wsepno.dll.mui

MUI Files Related to wsepno.dll.mui

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TableTextService.dll.mui	Myriad User Instrument	Windows 7	8192	C:\Windows\inf\
dialer.exe.mui	Microsoft Windows Phone Dialer	Microsoft® Windows® Operating System (6.0.6000.16386)	14336	C:\Windows\Panther\UnattendGC\

Other Files Related to wsepno.dll.mui

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
OneX_v1.xsd	XML Schema Definition	Windows 10	5957	C:\Windows\L2Schemas\
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