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:max_bytes(150000):strip_icc()/qEFdcPejoD-5dccc232b1c6495c95240d2e7c76880e.png "Excel File Extensions: XLSX, XLSM, XLS, XLTX, and XLTM")
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What is the file extension for Excel - javatpoint
Extensions of Excel | Types of File Formats ( XLS, XLSX, XLSM, XLSB )
Extensions of Excel | Types of File Formats ( XLS, XLSX, XLSM, XLSB )
How to change Excel file Extensions without Opening | WPS Office Academy
![FIXED] Excel Cannot Open the File Because the File Format or File Extension Is Not Valid](https://media.licdn.com/dms/image/D5612AQEdianeu8o9Nw/article-inline_image-shrink_1000_1488/0/1712816384469?e=1718236800&v=beta&t=gnsOFR4UAH_9Xb4mLrSI5Dq73DvizDJtcFdGFEatkA0 "FIXED] Excel Cannot Open the File Because the File Format or File Extension Is Not Valid")