Windows - .MST - File Extension for Microsoft Setup Transform Files

What is MST? MST, short name for Microsoft Setup Transform, is used as the file extension for Microsoft Installer Setup Transform files. .MST files are binary files that used by the Microsoft Install program to store software installation configuration options. See the sample .MST file included below.

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File Extension: .MST

MIME Type: application/octet-stream

File Content: Microsoft Setup Transform

.MST files are Microsoft Setup Transform files saved as binary files. Here are the first 64 bytes of a sample .MST file, 1033.mst, dumped in HEX values:

d0 cf 11 e0 a1 b1 1a e1 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 3e 00 03 00 fe ff 09 00 ................
06 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 ................
01 00 00 00 00 00 00 00 00 10 00 00 02 00 00 00 ................

.MST Microsoft Setup Transform file sample: Click sample.mst to download.

For more information on .MST Microsoft Setup Transform files:

Overview of the Windows Installer Technology

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