Software & Apps File Types What Is an MSE File? How to open, edit, and convert MSE files By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated February 13, 2020 File Types Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More Tweet Share Email A file with the MSE file extension is most likely a MediaShow Slideshow Project file used with CyberLink's MediaShow software. The format is used to hold text, sounds, transition effects, images, and anything else related to the slideshow or video. Other Types of MSE Files Some MSE files might instead be 3ds Max Encrypted MAXScript files that are used to save encrypted 3ds MAXScript files (.MS) so that their source code can't be seen or changed. Your MSE file could instead be an XML-like format used to describe a 3D model or a type of compact instrument file format used to store audio data. Perfect Keyboard is a program that automates the typing of text as if the keyboard were entering the data, and it too uses MSE files as a macro file that enables the user to perform a certain action (like strike certain keys or click the mouse) in order to run predefined text. Other MSE files could be related to Magic Set Editor, which is a program that lets you generate images of trading cards. MSE is both an abbreviation for this program as well as a naming scheme that the software uses when creating the cards. MSE is also an abbreviation for the Microsoft Security Essentials antivirus program, but there probably aren't any files in that application that end with the .MSE file extension. How to Open an MSE File If your MSE file is a slideshow file, it should be opened with CyberLink's MediaShow. Autodesk's 3ds Max is the program used to open 3ds Encrypted MAXScript files. You can also open one of these MSE files by uploading it to MSE Decrypt, but decrypting the file is only free for the first 1 KB of data. If you think that your file is saved in the text-based format that's used for displaying models, you might try using Moose. Since they're in a plain text format, a simple text editor/viewer might do the trick too, like Notepad in Windows, Notepad++, Brackets, etc. We don't have much information on MSE files that contain audio, but you might be able to open one with a program like Maize Sampler or Maize Studio. The popular VLC media player could work too, but you probably have to drag the file into VLC while the application is open (VLC probably doesn't open MSE files in the normal way). MSE files that are Perfect Keyboard Macro files can be opened using Pitrinec Software's Perfect Keyboard program. If your MSE file is related to Magic Set Editor, then it's probably named something like *.mse-set. These are archives that, when opened, reveal a file named "set," probably without a file extension, as well as a JPG of the card. You can open the archive with 7-Zip or any other file unzip tool (but you might have to first append ".zip" to the end of the file). The "set" file can be viewed with any text editor. While it's probably not too likely with a less common extension like MSE, you might find that one program opens these files by default when you'd really rather have another supporting program do it. Luckily you can change file associations in Windows if you'd like to. How to Convert an MSE File MSE files that you're using with MediaShow can be "converted" to WMV and some other video formats with the Produce button. We aren't aware of other file formats an MSE can be converted to using 3ds Max, but it's assumed that the program supports a lot of different export formats -- these types of programs typically do. You can probably find a list of them through a File > Save As or Export menu within the 3ds Max program. The same thing applies to the other formats mentioned above. If those kinds of MSE files even can be converted to other formats, it's most likely accomplished through the specific program that opens that type of MSE file. For instance, Maize Sampler may be able to convert an MSE file to an audio format while Perfect Keyboard might support exporting its MSE file to a text-based format. Still Can't Open the File? If your MSE file doesn't open with any of the above programs, you might double-check that you're reading the file extension correctly. Although their file extensions are similar, MSE files don't open with the same programs that MSI, MSR, MSG, and MSDVD files do. If you have one of those files, follow the link to learn more about it and what file openers support that format. If your MSE file doesn't open with the suggestions from above, we recommend using a text file viewer like Notepad++ to open the file as a text document. There may be some identifiable text within all the gibberish that makes up your MSE file that can help determine what program was used to create it or what format the file is in.