File Extension Database

Open MST File

MST files are configuration files used by the Microsoft Windows installer, as a component of the operating system that allows software installations with configuration options and custom parameters useful during installation.

Windows uses files with the MST extension, also known as transform files, to store the installation settings of the Microsoft Windows Installer application included in the OS.

One of the main functions of an MST file is to customize the Windows Installer settings, which allows you to install various applications on the disk.

The content of the MST file changes each time the preferred installation settings for certain applications are changed.

MST files are also used by programmers during software development, software version testing, and other processes.

For more information, you can go to the following link:

Microsoft Windows Installer

How Can I Open MST File on Windows

We researched and learned that the best way to open MST file is to find a MST file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a MST file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open MST file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as MST file opener then try to search online for "MST viewer", "application to open MST file" or "open MST file" queries in the search engine you like.
Install the application you found and check if it can open MST file

How Can I Open MST File on Mac OS

We recommend to find a MST file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a MST file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with MST file.
If you know the Mac OS application which can work as MST file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open MST file in it.
If you don't know the application which can open MST file then try to search for "MST viewer", "application to open MST file" or "read MST file" queries in the online search engine you like.
Install the application you found and check if it can read MST file

How Can I Open MST File on Android

If you downloaded a MST file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded MST file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "MST".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "MST viewer", "MST file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open MST File on iPhone or iPad

To open MST File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the MST file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "MST". This way you can find apps which can open MST files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "MST viewer" or "MST file" online in your favorite search engine.