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How to open MSU files? 4 simple methods of solving such problems

When you encounter a problem with an unknown MSU file and you do not know how to open such file, the first step you should take is to determine the cause of given problem. We will show you how to address most common problems with MSU files and how to solve them in 4 simple steps.

  1. 1. MSU File Extension
  2. 2. What is a(n) MSU file?
  3. 3. How to open MSU file?
    1. 3.1 Verify whether the file is properly associated with selected software
    2. 3.2 Install a program that supports MSU files
      1. 3.2.1 Programs that support files with MSU extension
    3. 3.3 Check for other possible causes of errors
    4. 3.4 Contact an expert
  4. 4. Similar file extensions

MSU File Extension

File
  • File type Windows Vista Update Package
  • File developer Microsoft
  • File category Misc Files
  • File popularity rating
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What is a(n) MSU file?

The MSU (Windows Vista Update Package) file format is a special package developed for the Microsoft Windows Vista operating system. It contains various kinds of updates including security patches, hotfixes, and feature-related packages.

MSU files are compressed, self-installing archives that contain update-related information, such as specially designed setup programs, registry keys, and other needed files. For optimal performance, these files should be run directly from the dedicated application. The Windows Update feature of Vista can also be used to install these packages.

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How to open MSU file?

In some cases problems may occur when trying to open MSU files. Steps listed below can be helpful in addressing such problems.

Step 1 – Verify whether the file is properly associated with selected software

The first thing user should do is to associate application with MSU files. It may happen so that even when an application that supports MSU files is installed on the system it is not properly associated with this file format. This can be easily remedied by associating program with MSU files. In order to associate such files with given application, user must open the file menu (by right-clicking on the file) and choosing "Open with". A list of suggested applications will be displayed at the top part of menu. Next, select an application and confirm your choice by checking "Always use the selected application to open this kind of files" option. Confirm your selection by clicking OK.

In order to open MSU file, focus on steps 1 and 2

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In majority of cases following instruction in step 1 and 2 should be enough to open files with MSU extension. Before attempting the next steps, test all the programs listed below.

Step 2 – Install a program that supports MSU files

Should it happen that the section with suggested programs is empty, it is most probable that no program supporting MSU files is installed on the system. Choose a program from the following list and install it:

Programs that support files with MSU extension

Windows programs
Windows

Step 3 – Check for other possible causes of errors

  • Corrupted storage medium on which the MSU file is stored
  • File data corruption or incompleteness (for example, due to incomplete download or copy process). In such case the file must be re-downloaded or properly copied and then opened again.
  • Compatibility issues – check whether MSU extension is compatible with user’s operating system
  • Administrative policy settings may prevent user from opening given file

Step 4 – Contact an expert

If you are still unable to open MSU file, you should contact an IT expert. You could also try to contact the developer of given software that supports MSU files. Appropriate website addresses can be found by clicking the name of given program in the list above.

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