•1 min read•from Microsoft Excel | Help & Support with your Formula, Macro, and VBA problems | A Reddit Community
Excel cannot open the file ****.xlsx because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file.
sorry if i say something wrong, english is not my first lenguague, but i had this file on a external drive, i just opened yesterday and all work great, but today this mensage appear, what can i do?.
already try use the open and repair option, but doesn't works either
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