Windows Vista Update Package
Microsoft
Misc Files
mime-type/not-avalible
10/31/2021
If you need to edit the MSU file, one of the safest methods is to download and install the software dedicated to working with MSU files. There are many tools known as MSU Online Editors, but it is not certain that they operate in a way that keeps the data contained in the file safe.
The installation of the program that supports the MSU file does not guarantee that the file can be edited. Additional information about the MSU file extension can be found here.
This is definitely the surest way. Use any of the programs that support the MSU file to check if it allows you to edit the file. It's safest to download the software from the developer's website. Links to the websites of software producers can be found on the software subpages. Below you will find some examples of software programs that support the MSU file (so it is very possible that they can edit files in MSU format).
And here is the full list of programs supporting the MSU file
Most of the file formats are simply text format saved under a different extension - so you can open them e.g. with Windows Notepad But beware - making manual changes to the MSU file or another may result in its damage. After saving the changes, it may not be possible to reopen the MSU file. By far the safest way is to use file editing programs that works with the MSU extension.
It is actually certain that one of the applications working with files in the MSU format will be able to edit the file. However, if for some reason you did not find this option, you can try using tools prepared by external websites. Below are tools that allow you to edit MSU online files.
Free Online File Edit Service
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