Hi Rockstar,

You can't really tell whether an Office document is corrupt other than by trying to open it. But corruption isn't the only reason a document might not open. For example, if you were to change a Word document's extension to .xls, Windows would no longer recognise it as a Word file - it would try to open it with Excel instead (probably unsuccessfully). Also bear in mind that a corrupt file doesn't mean nothing useful can be retrieved from it.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]