How To Fix Excel Cannot Open the File Format/File Extension Is Not Valid/Corrupted [Solved]

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Sometimes after reinstalling the Microsoft Excel few files not opening properly, it’s showing like “Excel cannot open the file because the file format or file extension is not valid. verify that the file has not been corrupted and the file extension matches the format of the file.”
So, Today in this video tutorial I Will show you guys how to fix Excel Cannot Open the File/the File Format or File Extinction Is Not Valid.

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27 thoughts on “How To Fix Excel Cannot Open the File Format/File Extension Is Not Valid/Corrupted [Solved]

  1. Hey there! Help pls. I use MacBook Pro…. The error ALERT.
    "The file format and extension of ‘ ‘ don’t match. The file could be corrected or unsafe. Unless you trust its source, don’t open it. Do you want to open it anyway?".
    I have installed two times the Excel application. But added to the frustration of using MS package on a MacBook.

    The Options are Yes or No. Clicking both options lead to MULTIIPLE FILES OPENING, REPEATEDLY WITH NO STOPPING. I have to force quit. No result.

    I use MACBOOK & have official Office 365 subscription.

    Clueless what to do & whom to seek help from….
    So, approaching you as favour.

  2. look my file was from ms excel 2007 with many formulas in it n i want open it with my laptop which using 2016 ms excel try many way still said that file still corrupted

  3. thanks, but tried and applied the same and still getting the message, my file was opening daily, I don't knwo what's wrong suddenly, plz advice, it containes very important data.

  4. I unchecked these options, but it didn't work for me. This error is common in the forums too. I read the solution of this forum: and repaired my file using Excel repair software.

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