MathWorks MATLAB EXE mex.exe

Repair Mex.exe Issues (How to Download and Fix)

Last Updated: 11/25/2023
[Reading Time Required: 3.5 minutes]

Windows Executable files such as mex.exe utilize the EXE file extension. This file is considered a Win64 EXE (Windows Executable) file, and was first created by MathWorks for the MATLAB R2009a software package.

mex.exe was first developed on 03/14/2009 for the Windows 10 Operating System in MATLAB R2009a. According to our records, this release is the only version of this file offered by MathWorks.

Below, you find comprehensive file information, instructions for simple EXE file troubleshooting, and list of free mex.exe downloads for each available file version.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	mex.exe
File Extension:	EXE file extension
File Type:	Executable Application
Description:	Windows Executable
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Program:	MATLAB R2009a
Developer:	MathWorks
Software:	MATLAB
Software Version:	R2009a

File Details
Entry Point:	0x5848
Code Size:	22528

View Other mex.exe Information

File Info	Description
File Size:	44 kB
File Modification Date/Time:	2019:12:18 13:38:53+00:00
File Type:	Win64 EXE
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	2019:07:19 19:10:33+00:00
PE Type:	PE32+
Linker Version:	14.15
Code Size:	22528
Initialized Data Size:	21504
Uninitialized Data Size:	0
Entry Point:	0x5848
OS Version:	6.0
Image Version:	0.0
Subsystem Version:	6.0
Subsystem:	Windows command line

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

Optional Offer for WinThruster by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

What are mex.exe Error Messages?

mex.exe Runtime Errors

Runtime errors are MATLAB errors that occur during "runtime". Runtime is pretty self-explanatory; it means that these EXE errors are triggered when mex.exe is attempted to be loaded either when MATLAB is starting up, or in some cases already running. Runtime errors are the most common form of EXE error you will encounter using MATLAB.

In most cases, mex.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these mex.exe error messages mean that MATLAB was either unable to locate this file on startup, or the file is corrupt, resulting in a prematurely-aborted startup process. Generally, MATLAB will be unable to start without resolving these errors.

Some of the most common mex.exe errors include:

mex.exe - Bad Image.
mex.exe Application Error.
mex.exe could not be found.
mex.exe could not be installed.
mex.exe could not be launched. Class not registered.
mex.exe could not be started.
mex.exe failed to initialize properly.
mex.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
mex.exe is not a valid Win32 application.
mex.exe is not running.
Cannot find mex.exe.
Error starting program: mex.exe.
Faulting Application Path: mex.exe.
The file mex.exe is missing or corrupt.
Windows failed to start - mex.exe.

System Error

The program can’t start because mex.exe is missing from your computer. Try reinstalling the program to fix this problem.

Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Finding the source of the mex.exe error is key to properly resolving these errors. Although most of these EXE errors affecting mex.exe will happen during startup, occasionally you will encounter a runtime error while using MATLAB R2009a. This can occur due to poor programming on behalf of MathWorks, conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of mex.exe errors can occur if it has been accidentally moved, deleted, or corrupted by a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Optional Offer for WinThruster by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

How to Fix mex.exe 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 mex.exe 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 mex.exe error, please proceed to the Step 2 below.

Step 2: If recently installed MATLAB (or related software), uninstall then try reinstalling MATLAB software.

You can uninstall MATLAB software by following these instructions (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "Uninstall" and press "ENTER".
In the search results, find and click "Add or Remove Programs"
Find the entry for MATLAB R2009a and click "Uninstall"
Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall MATLAB software.

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

MATLAB R2009a

MathWorks

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 mex.exe 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 mex.exe error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

Optional Offer for WinThruster by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

If Those Steps Fail: Download and Replace Your mex.exe 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 mex.exe file version. We maintain a comprehensive database of 100% malware-free mex.exe files for every applicable version of MATLAB. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download mex.exe Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy this file to the appropriate MATLAB folder location:

Windows 10: C:\Program Files\MATLAB\R2019b\bin\win64\
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 mex.exe 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.

Optional Offer for WinThruster by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Download mex.exe Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying mex.exe to your appropriate Windows system directory. MathWorks typically does not release MATLAB EXE 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 mex.exe and all other EXE files for MATLAB. An incorrectly installed EXE file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

MATLAB R2009a

File Name

Software Version

File Version

Architecture

mex.exe

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
File Size:	45056
File Date:	12/18/2019
MD5 Checksum:	74c385e93b739f7c963c90e323c42179
SHA1 Checksum:	f7cf70f51a00d1d134e7f5ff7822c15d5873849b
SHA256 Checksum:	05ec6cd843549e2e3b3db3d5856346fe824469d92e1fa3cc2a4e4d9da4ae5038
CRC32:
File Directory Location:	C:\Program Files\MATLAB\R2019b\bin\win64\

File Version, System, and Machine Information
File Type:	Win64 EXE
Image Version:	0.0
Initialized Data Size:	21504
Linker Version:	14.15
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows command line
Subsystem Version:	6.0
File Modification Date/Time:	12/18/2019

Optional Offer for WinThruster by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Files Related to mex.exe

EXE Files Related to mex.exe

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
Music.UI.exe	Music Application	Entertainment Platform (10.19101.107100000-19101)	23313408	C:\Windows\Panther\
install_supportsoftwar...	install_supportsoftware	install_supportsoftware (19, 1, 0, 0)	576344	C:\Windows\System32\winevt\Logs\
ps_windows_inject.exe	Windows Executable	MATLAB R2009a	120832	C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
ninja.exe	Windows Executable	MATLAB R2009a	515072	C:\Windows\System32\DriverStore\FileRepository\...
MATLABWindow.exe	MATLAB R2019b	MATLAB (9.7.0.1182309)	782680	C:\Windows\System32\

Other Files Related to mex.exe

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
autorun.inf	Setup Information	MATLAB R2009a	28	C:\Users\Tester\Downloads\_temp_matlab_R2019b_w...
api-ms-win-core-heap-l...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.17134.12)	11112	C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
api-ms-win-core-synch-...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.15063.468)	20800	C:\Program Files\MATLAB\R2019b\bin\win64\
api-ms-win-core-memory...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.17134.12)	11624	C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
api-ms-win-core-rtlsup...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.15063.137)	19264	C:\Program Files\MATLAB\R2019b\sys\java\jre\win...

Optional Offer for WinThruster by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Browse Other File Extensions in Alphabetical Order : # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

You are downloading trial software. The purchase of a one-year software subscription at the price of $29.97 USD is required to unlock all software features. Subscription auto-renews at the end of the term (Learn more). By clicking the "Start Download" button above and installing "Software", I acknowledge I have read and agree to the Solvusoft End User License Agreement and Privacy Policy.