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Excel cannot be open the file 'filename.xlsx' because the file format or file extension is not valid - Microsoft Community Hub
Allow XLS and XLSX files without a file extension to be detected as Excel instead of Wikitext · Issue #2850 · OpenRefine/OpenRefine · GitHub
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Vector Green Icon XLSX. File Format Extensions Icon Stock Vector - Illustration of computer, computing: 173578489
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File Format Vector Art PNG, Xlsx File File Extension File Format Icon Vector Design, Emblem, Filetyp, Database PNG Image For Free Download
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