Every now and then, when I try opening an Excel file, I get a message saying that "Excel cannot open the file 'file.xlsx' because the file format or the file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file.
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I see this most often when a file has been transferred around a lot and gets corrupted due to bad sectors on hard drives, bad thumb drives, etc... Occasionally, I find a repair utility that will....kind of....fix it. You tend to lose all formatting and usually the user
would have to spend more time doing than life than simply starting from scratch. If on a file server, shadow copies
(previous versions) are a god send. If it happens completely randomly, does it happen more often to the same group of people? Perhaps an update malfunctioned?
Advanced and graphical user interface tool to recover corrupt or damaged Excel (.xls & .xlsx) files. Its scan corrupt or inaccessible excel files and recover your spreadsheets data.
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Excel cannot open the file 'file.xlsx' because the file format