Originally Posted by macropod

Testing whether a given Microsoft Office application has been installed correctly isn't something you can test with any particular data file (e.g. Word document, Excel workbook) or a suite of such files.



Even where a given Microsoft Office application has been installed correctly, if it hasn't been kept up to date, it may exhibit erroneous behaviour due to faults that might develop over time, due to interactions with third-party addins, etc. Even when neither of those apply, patches might be needed to maintain compatibility with later versions. Conversely, later versions may handle files created by earlier versions differently than the earlier versions did. Whether that is a problem depends on what the changes are and how their impact is perceived by the file owners/users.

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