Learn more about Office Online using these Microsoft Excel Online tips and tricks for beginners. Add function, create a survey, and more using Excel Online.

With Excel-DNA you can make native (.xll) add-ins for Excel using C#, Visual Basic.NET or F#, providing high-performance user-defined functions (UDFs), custom ribbon interfaces and more. This project ...

Microsoft's spreadsheet program can do way more than you might realize. These are the hacks and tricks you need to know.

To fix an Excel spreadsheet not adding up correctly, check the SUM function's syntax and make sure there aren't any text format cells in the sheet.

Learn how to add the strikethrough effect in Outlook for desktop and web. Outlook has a single/double strikethrough feature just like every other Office 365 app.

Reason: The issue description indicates that the problem with installing add-ins started occurring after a recent update to Excel for MacOS Version 16.100 (25081015). The user explicitly mentions that ...