How to Download and Fix MMSwitch.ax Errors

Last Updated: 12/05/2023
[Time Needed for Reading: ~4-6 minutes]

The development of Morgan Multimedia Stream Switcher by Pandora Tv prompted the latest creation of MMSwitch.ax. It is also known as a MM Switcher file (file extension AX), which is classified as a type of Win32 DLL (Dynamic link library) file.

MMSwitch.ax was first released in the Windows 10 Operating System on 07/09/2019 with KMPlayer 4.2.2.29. The latest version update [v0, 9, 9, 0] for KMPlayer was 2019.06.13.02 released on 06/13/2019.

Continue reading below to discover detailed file information, AX file troubleshooting, and free downloads of several versions of MMSwitch.ax.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	MMSwitch.ax
File Extension:	AX file extension
Description:	MM Switcher
Object File Type:	Dynamic link library
File Operating System:	Windows 16-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Morgan Multimedia
Software Program:	Morgan Multimedia Stream Switcher
Legal Copyright:	Copyright (C) 1990-2001 Morgan Multimedia.

File Details
Character Set:	Windows, Latin1
Language Code:	English (U.S.)
File Flags:	Pre-release, Private build
File Flags Mask:	0x30003f
Entry Point:	0x3bd0
Code Size:	34304

View Other MMSwitch.ax Information

File Info	Description
File Size:	61 kB
File Modification Date/Time:	2019:10:04 14:03:40+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2002:11:18 15:15:22+00:00
PE Type:	PE32
Linker Version:	6.0
Code Size:	34304
Initialized Data Size:	28672
Uninitialized Data Size:	0
Entry Point:	0x3bd0
OS Version:	4.0
Image Version:	0.0
Subsystem Version:	4.0
Subsystem:	Windows GUI
File Version Number:	0.9.9.0
Product Version Number:	0.9.9.0
File Flags Mask:	0x30003f
File Flags:	Pre-release, Private build
File OS:	Windows 16-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Windows, Latin1
Company Name:	Morgan Multimedia
File Description:	MM Switcher
File Version:	0, 9, 9, 0
Internal Name:	MMSwitch.ax
Legal Copyright:	Copyright (C) 1990-2001 Morgan Multimedia.
Product Name:	Morgan Multimedia Stream Switcher
Product Version:	0, 9, 9, 0
Comments:
Legal Trademarks:
Private Build:

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

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What are MMSwitch.ax Error Messages?

Dynamic Link Library MMSwitch.ax Errors

MMSwitch.ax is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like MMSwitch.ax, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like wuauclt.exe - to follow. These files were created so that multiple programs (eg. KMPlayer) could share the same MMSwitch.ax 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 AX 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 MMSwitch.ax is attempted to be loaded either when KMPlayer is starting up, or in some cases already running. Some of the most common MMSwitch.ax errors include:

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

Your MMSwitch.ax file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with KMPlayer), or deleted by a malware infection. Furthermore, MMSwitch.ax file corruption could be caused from a power outage when loading KMPlayer, system crash while loading MMSwitch.ax, 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 MMSwitch.ax 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 MMSwitch.ax 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 MMSwitch.ax error, please proceed to the Step 2 below.

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

You can uninstall KMPlayer 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 KMPlayer 2019.06.13.02 and click "Uninstall"
Follow the prompts for uninstallation.

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

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

KMPlayer 2019.06.13.02

Pandora TV

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 MMSwitch.ax 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 MMSwitch.ax 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 MMSwitch.ax 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 MMSwitch.ax file version. We maintain a comprehensive database of 100% malware-free MMSwitch.ax files for every applicable version of KMPlayer. Please follow the steps below to download and properly replace you file:

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

Windows XP: C:\KMPlayer\
Windows 10: C:\KMPlayer\
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 XP.

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

CAUTION : We strongly advise against downloading and copying MMSwitch.ax to your appropriate Windows system directory. Pandora Tv typically does not release KMPlayer AX 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 MMSwitch.ax and all other AX files for KMPlayer. An incorrectly installed AX file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

KMPlayer 2019.06.13.02

File Name

Software Version

File Version

Architecture

MMSwitch.ax

0.9.9.0

0, 9, 9, 0

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows XP
Software:	Morgan Multimedia Stream Switcher
Software Version:	0.9.9.0
File Version:	0, 9, 9, 0
File Size:	62464
File Date:	10/04/2019
MD5 Checksum:	4a83ffdb59d6b757c5639ffd4dc360fb
SHA1 Checksum:	4734b22b1f85fca9fba0b4e1505d7d8d52205845
SHA256 Checksum:	3529684093e748874812894b0cd9eee8c72883e1731177a8a58412fa544ce70a
CRC32:
File Directory Location:	C:\KMPlayer\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	28672
Linker Version:	6.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	4.0
File Modification Date/Time:	10/04/2019

KMPlayer 4.2.2.29

File Name

Software Version

File Version

Architecture

MMSwitch.ax

0.9.9.0

0, 9, 9, 0

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Morgan Multimedia Stream Switcher
Software Version:	0.9.9.0
File Version:	0, 9, 9, 0
File Size:	62464
File Date:	10/04/2019
MD5 Checksum:	4a83ffdb59d6b757c5639ffd4dc360fb
SHA1 Checksum:	4734b22b1f85fca9fba0b4e1505d7d8d52205845
SHA256 Checksum:	3529684093e748874812894b0cd9eee8c72883e1731177a8a58412fa544ce70a
CRC32:
File Directory Location:	C:\KMPlayer\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	0.0
Initialized Data Size:	28672
Linker Version:	6.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	4.0
File Modification Date/Time:	10/04/2019

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Files Related to MMSwitch.ax

AX Files Related to MMSwitch.ax

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
LAVVideo.ax	LAV Video Decoder - DirectShow Video Decoder	LAV Video Decoder (0.70.2)	1085440	C:\Users\Tester\AppData\Local\Microsoft\Windows...
aac_parser.ax	Direct show parser filter for ADTS	aac_parser (1.1)	81920	C:\Users\Tester\AppData\Local\Packages\Microsof...
LAVAudio.ax	LAV Audio Decoder - DirectShow Audio Decoder	LAV Audio Decoder (0.70.2)	257536	C:\Users\Tester\AppData\Local\Microsoft\Windows...
LAVVideo.ax	LAV Video Decoder - DirectShow Video Decoder	LAV Video Decoder (0.70.2)	1085440	C:\Users\Tester\AppData\Local\Microsoft\Windows...
LAVAudio.ax	LAV Audio Decoder - DirectShow Audio Decoder	LAV Audio Decoder (0.70.2)	303616	C:\Users\Tester\AppData\Local\Microsoft\Windows...

Other Files Related to MMSwitch.ax

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
Sessions.back.xml	Extensible Markup Language	KMPlayer 4.2.2.29	5277233	C:\Windows\servicing\Sessions\
setupact.log	Log	KMPlayer 4.2.2.29	60976	C:\Windows\Panther\UnattendGC\
setupact.log	Log	KMPlayer 2019.06.13.02	2027260	C:\Windows\Logs\DPX\
setupact.log	Log	KMPlayer 2019.06.13.02	60976	C:\Windows\Panther\UnattendGC\
WmiApRpl.h	C/C++/Objective-C Header	KMPlayer 4.2.2.29	3444	C:\Windows\System32\wbem\Performance\

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