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MSU file extension

The table below provides useful information about the .msu file extension. It answers questions such as:

  • What is the .msu file?
  • What program do I need to open a .msu file?
  • How can the .msu file be opened, edited or printed?
  • How can I convert .msu files to another format?
  • Where can I find the specifications for .msu?
  • Which MIME-type is associated with the .msu extension?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

.msu file extension details

Microsoft Windows Vista Update Package

Microsoft Windows Vista Update Package .msu file icon
MSU file is a Microsoft Windows Vista Update Package. The Windows Update Stand-alone Installer (wusa.exe) uses the Windows Update Agent API to install update packages. Update packages have an .msu file name extension.
Category: Archive files
Mime-type: application/microsoftupdate
Magic number: -
Magic string: -
Sample: -
MSU aliases:
MSU related links:
MSU related extensions:
Microsoft Windows Installer Package

Microsoft Windows Installer Data

Other types of files may also use the .msu file extension.

.msu file extension error

The .msu file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

msi, ms, lsu, nsu, mus, msy, msj, msh, mqu, mcu, su, mxu, mu, msk, meu

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Microsoft Windows Installer Package
Autodesk 3D Studio Max Script
LANsurveyor Map
SUwin Project
MicroSyn Data
MaxL Shell Script
GraphicUSB Capture Data
Corel Paint Shop Pro Mask
MuPAD Source Code
Myriad Melody Assistant Music Score
open .msu file

Can't open a .msu file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .msu file association, check the FAQ.

.msu file extension

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .msu file extension, write to us!

.msu file extension

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