MSU File Extension

MSU file icon
Windows Vista Update Package
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What is MSU file?

An .MSU file is a Windows update package file that is used by the Windows Update applet for upgrading the system applications and files. The source code of the MSU file can be used as updates, small upgrades, patches, or fixes for various versions of MS-Windows including, Microsoft Windows Vista, Microsoft Windows 7, and Microsoft Windows Server. The MSU file comprises of the following four elements in a compressed format: meta data content for describing the update package, CAB files that contain update data, an XML file for describing the MSU file, and the properties file that is used by the Wusa.exe to search for the appropriate updates.

Programs that support MSU file

We hope we helped you solve the problem with the MSU file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the MSU file (apart from the lack of the proper application installed).

First - the MSU file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the MSU file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the MSU file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the MSU file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the MSU file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on MSU file.

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