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MSU

msu icon

Microsoft Update Standalone Package

File type: Archive and compressed file

Files with msu file extension can be most often found as installation packages for Windows Update. Opening these files will result in opening of Windows Update service and installation of its content.

Found 2 different file type records with the same msu filename suffix.

What is msu file?

File type category:
Archive and compressed file

Date updated: December 31, 2024

msu file extension is mainly used for files that contain Microsoft Update Standalone Package.

These files are typically used in Windows Vista and later to install updates and hotfixes through Windows Update service.

MSU archive contains:

  • Windows update metadata
  • CAB file with update data
  • XML file including MSU content
  • properties data for Windows Update

How to open msu file?

If you double click (open) on *.msu file, the installer will automatically start the update. Also you can use expand and pkgmgr commands in the command prompt.

How to convert msu file?

There is no reason to convert .msu files to other formats and it is not even possible.

Suggested software to open msu file:

Associated software actions with the msu file

Software applications that can open msu files:

Software applications that handle other tasks involving msu files:

Blaise data

File type category:
Various data file

Date updated: August 8, 2018

Record marked as obsolete and not updated for a long time.

The msu file extension is associated with Blaise, a computer-assisted survey processing and interviewing system, created by Statistics Netherlands. The MSU file stores some kind of data used by Blaise.

The Blaise software seems no longer developed and supported.

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