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.

Excel to PDF MCP Server An MCP (Model Context Protocol) server that can convert Excel (.xls/.xlsx) and Apple Numbers (.numbers) files to PDF format. This tool integrates with AI assistants like Claude ...

Learn how to change the default file format for saves in Word, Excel, and PowerPoint, so that you do not need to change it every time.

This guide provides instructions on how to set up and use XLSX files with DBeaver. The XLSX driver allows you to work with XLSX data as if it were in a database. You can retrieve data and apply ...

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

Apple's Numbers spreadsheet for Mac, iPhone, and iPad, is not as powerful as Microsoft Excel, but most users will be ...

Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside. Ho… ...

Discover how using Obsidian with OneDrive can revolutionize your productivity by seamlessly syncing notes and integrating ...

We review the best PDF to Excel converter apps for changing PDF files into XLSX spreadsheets.

But perhaps the most important update in this version is improved interoperability with Microsoft Office file formats like DOCX, PPTX, and XLSX. Apparently, users were experiencing bugs when opening ...

LibreOffice 25.8 released with PDF 2.0 export, 30% faster file opening, new Calc functions, better performance, and various ...