MSWMM File Extension
Windows Movie Maker Project
- File Type mswmm
- Developer Microsoft
- Popularity
- Application Windows Movie Maker
- Category Data Files
- Format Binary
What is a MSWMM file?
Files with the MSWMM extension are specifically tied to Windows Movie Maker Project, a Data Files type, and there are 6196 files in this category.
The Windows Movie Maker Project (MSWMM) was created by Microsoft, a company that developed file format and produced 242 programs for their use.
MSWMM files are supported by Windows. If you need to open a MSWMM file, you can use one of 3 programs, such as Windows Movie Maker, Microsoft Windows Live Movie Maker and Microsoft Windows.
Programs that support MSWMM files
How to open a MSWMM file?
If you’re having difficulty opening a MSWMM file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.
Windows Movie Maker, Microsoft Windows Live Movie Maker and Microsoft Windows stand out as the preferred programs to manage MSWMM files effectively. To install the latest version of Windows Movie Maker on your computer, visit the Microsoft website where you can download the version available for all operating systems.
After installation, your operating system should automatically open MSWMM files with Windows Movie Maker.
Set Windows Movie Maker as the default MSWMM handler
Choose an app to open a file on Mac
- Right click or use Control + left click on the desired MSWMM file to launch the file options menu;
- Choose "Open in Application" and click "Other";
- Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
- In this menu, select "All Programs", then find Windows Movie Maker and check the box next to "Always open in the application."
Set default programs for Windows
- Start by right-clicking on your MSWMM file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
- In the pop-up window, find and select the Windows Movie Maker application from the available options;
- Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening MSWMM files.
Convert files to and from MSWMM
If you have trouble working with a MSWMM file, try converting it to WMV, WMA, M4A, MP4, 3GP or similar data files.
Be aware that converting a MSWMM file may reduce some features, but you can usually revert it to the original format.
Convert MSWMM to other file formats
Effective solutions for MSWMM file problems
There are some common issues with MSWMM files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.
What are the methods to detect if my MSWMM file has been corrupted?
MSWMM data files that have become corrupted may display one or more of the following symptoms:
- An unexplained increase in the size of the MSWMM file;
- Trying to work with the archive in Windows Movie Maker or other programs causes instability or program crashes;
- The file does not open correctly or displays error messages;
- While working with the file, error alerts are encountered;
- The file exhibits poor performance during editing operations in Windows Movie Maker;
Why does Windows Movie Maker crash?
Insufficient software updates can contribute to Windows Movie Maker crash. To avoid this, make sure that you have installed the latest updates for Microsoft products.
Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.
How to repair a corrupted MSWMM file?
Open the damaged MSWMM file in a recovery program and select the "Repair" menu item to start the repair operation. Please wait patiently for the recovery process to finish as it will automatically repair the damaged data files.
How to edit a MSWMM file?
To make changes to MSWMM files, you need specialized software that allows both opening and editing the data files. Online MSWMM editors offer fewer capabilities than applications optimized for Windows Movie Maker Project.
Best MSWMM editors 2026
Based on these criteria, we have prepared a list of available MSWMM editors.
| MSWMM Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft Windows Live Movie Maker | Microsoft | Windows | 4.2 out of 5 (35 reviews) |
| Windows Movie Maker | Microsoft | Windows | 4.2 out of 5 (37 reviews) |