Microsoft announced new custom function capabilities coming to Excel at last week's Build developer conference. Custom functions for Excel let organizations write their own additions to Excel's ...

Before we go further, it is important to note that this is just a proof of concept and to even use custom functions in Excel, you first need to be using the Office Insider version of Excel and to ...

We have an Excel Add-in that uses the textRuns feature from the Excel JavaScript API 1.18 to insert formatted text into cells. One of our clients constantly experiences an issue: no values are ...