File Type Generic IconWindows Imaging Format File
File Format Proprietary (Microsoft)
Usage Referenced by an application; not meant to be opened manually; may run a program or script when opened
Rank ★ ★ ☆  Average

The WIM format is a disk image format introduced by Microsoft with Windows Vista. It contains multiple files in a single package. The archive may be compressed using LZX (maximum compression), XPRESS (maximum speed), or may be uncompressed.

Each WIM file has the following file structure:

  • WIM Header - Defines the content of the WIM file, with related metadata.
  • File Resources — Packages that contain source files and other data.
  • Metadata Resource — Contains information about the captured files that you are capturing, including directory structure and file attributes.
  • Lookup Table — Defines the location of resource files.
  • XML Data — Contains additional information about the disk image.
  • Integrity Table — Contains security information used to verify the integrity of the disk images.

Info About Microsoft ImageX

ImageX is a command-line tool developed by Microsoft that enables users to capture and modify file-based (rather than sector-based) disk images. It uses the WIM file format, which can be distributed locally or over a network. ImageX is commonly used by OEMs and corporations to streamline software distribution.

Open With

IconMicrosoft ImageX

IconWinMount International WinMount


Updated January 18, 2013
Information from the PC File Extensions Reference