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.

In the dialog box, select an Excel file and click Insert. An Insert File dialog box will appear. Inside the box, if you select Attach File, a link to the file will appear on the OneNote page.

How to use Google Sheets to create, work with, and collaborate on spreadsheets — and how Gemini, Google’s AI assistant, can give you a head start.

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These 46 Pro Excel Tips Will Transform You Into a Spreadsheet Magician Microsoft's spreadsheet program can do way more than you might realize. These are the hacks and tricks you need to know.