Excel Invalid Extension or File Format: Solutions You Need to Try - Sheet Skunk
![Excel Cannot Open the File Because the File Format or File Extension Is Not Valid [3 Ways to Fix]](https://www.isunshare.com/images/article/office/fixed-excel-cannot-open-the-file-because-the-file-format-or-file-extension-is-not-valid/excel-cannot-open-the-file.png "Excel Cannot Open the File Because the File Format or File Extension Is Not Valid [3 Ways to Fix]")
Excel Cannot Open the File Because the File Format or File Extension Is Not Valid [3 Ways to Fix]
Ultimate Guide to Fix “Excel Cannot Open the File” Error
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✓Excel Cannot Open the File Because the Extension Is Not Valid [Windows & Mac Solutions]
4 Ways To Fix "The File Is Corrupted And Cannot Be Opened Excel" Error
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Solved] Excel Cannot Open the File Because the Extension Is Not Valid
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How to fix "The file is corrupt and cannot be opened" Excel 2010 error
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✓Excel Cannot Open the File Because the Extension Is Not Valid [Windows & Mac Solutions]
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Solved: Excel Cannot Open the File Because the Extension Is Not Valid
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Excel cannot open the file 'ABCDE.xlsx' because the file format or file extension is not valid" when use "Reports - Run" ... "Save"
