Fix, Download, and Update MATLABMexHost.exe

Last Updated: 11/27/2023
[Reading Time Required: 3.5 minutes]

MATLABMexHost.exe uses the EXE file extension, which is more specifically known as a Windows Executable file. It is classified as a Win64 EXE (Windows Executable) file, created for MATLAB R2009a by MathWorks.

MATLABMexHost.exe was first developed on 03/14/2009 for the Windows 10 Operating System in MATLAB R2009a. According to our records, this is the primary and most recent file release from MathWorks.

Please continue reading to find your correct MATLABMexHost.exe file version download (free), detailed file information, and EXE file troubleshooting instructions.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	MATLABMexHost.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:	0x216e8
Code Size:	148992

View Other MATLABMexHost.exe Information

File Info	Description
File Size:	270 kB
File Modification Date/Time:	2019:12:18 14:18:38+00:00
File Type:	Win64 EXE
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	2019:07:19 17:09:37+00:00
PE Type:	PE32+
Linker Version:	14.15
Code Size:	148992
Initialized Data Size:	126976
Uninitialized Data Size:	0
Entry Point:	0x216e8
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.

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What are MATLABMexHost.exe Error Messages?

MATLABMexHost.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 MATLABMexHost.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, MATLABMexHost.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these MATLABMexHost.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 MATLABMexHost.exe errors include:

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

System Error

The program can’t start because MATLABMexHost.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 MATLABMexHost.exe error is key to properly resolving these errors. Although most of these EXE errors affecting MATLABMexHost.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 MATLABMexHost.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.

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How to Fix MATLABMexHost.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 MATLABMexHost.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 MATLABMexHost.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 MATLABMexHost.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 MATLABMexHost.exe 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 MATLABMexHost.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 MATLABMexHost.exe file version. We maintain a comprehensive database of 100% malware-free MATLABMexHost.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 MATLABMexHost.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\interprocess\bin\win64\mex\
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 MATLABMexHost.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.

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

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

MATLABMexHost.exe

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
File Size:	276992
File Date:	12/18/2019
MD5 Checksum:	36bd28f7d6724b54e12edfbce18d09bf
SHA1 Checksum:	d722e55e1067d8546234b0f47820725688779380
SHA256 Checksum:	b6f7b93751a9ef55e546800096604aed69123bca86a6e1fb629e6eccb9b5adde
CRC32:
File Directory Location:	C:\Program Files\MATLAB\R2019b\interprocess\bi ...

File Version, System, and Machine Information
File Type:	Win64 EXE
Image Version:	0.0
Initialized Data Size:	126976
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

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Files Related to MATLABMexHost.exe

EXE Files Related to MATLABMexHost.exe

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
mw_4a.exe	mw_4a	MATLAB R2009a	175960	C:\Windows\System32\winevt\Logs\
keytool.exe	Java(TM) Platform SE binary	Java(TM) Platform SE 8 (8.0.2020.8)	17272	C:\Windows\System32\
tnameserv.exe	Java(TM) Platform SE binary	Java(TM) Platform SE 8 (8.0.2020.8)	17272	C:\Windows\System32\
MATLABWindow.exe	MATLAB R2019b	MATLAB (9.7.0.1182309)	782680	C:\Windows\System32\
ddux_settings.exe	Windows Executable	MATLAB R2009a	419840	C:\Windows\System32\winevt\Logs\

Other Files Related to MATLABMexHost.exe

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
WmiApRpl.h	C/C++/Objective-C Header	MATLAB R2009a	3444	C:\Windows\System32\wbem\Performance\
api-ms-win-core-profil...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.15063.468)	18240	C:\Program Files\MATLAB\R2019b\bin\win64\
api-ms-win-core-rtlsup...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.15063.468)	19264	C:\Program Files\MATLAB\R2019b\bin\win64\
api-ms-win-core-dateti...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.15063.468)	18752	C:\Program Files\MATLAB\R2019b\bin\win64\
api-ms-win-core-debug-...	ApiSet Stub DLL	Microsoft® Windows® Operating System (10.0.15063.468)	18752	C:\Program Files\MATLAB\R2019b\bin\win64\

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