If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Learn how to use a Microsoft 365 setting to choose whether to open files in the online or desktop app, giving you full control for each file.

Repeat this process with Excel .xlsx or xls files, Powerpoint .ppt files, and other Microsoft Office files if needed After you associate the file type with the intended Microsoft Office app again, the ...

How to Open an XLS File in Excel. XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save ...

Wondering how to open a Numbers file in Excel? Read this effortless guide to learn the best file conversion tricks!

To open the SQL .BAK files in Excel, locate the .bak file on your hard drive, right-click it and select & rename it with XLS file extension.

Didn't save your Excel workbook on a Mac? Here are four methods for recovering lost or unsaved Excel files on your Mac.

Spread the loveMicrosoft Excel is a widely used spreadsheet software that allows users to manage, analyze, and visualize data with ease and precision. The process of opening an Excel file might seem ...

If you're wondering how to recover an unsaved Excel file, we've got covered with our guide that has three easy recovery methods.