Excel is designed for transparency and calculation, which is exactly why it's so bad at keeping secrets. It offers plenty of ways to keep your data out of sight, but don't mistake those for actual ...

Nearly every Microsoft Excel workbook I own—especially those I share with others—contains a hidden backend worksheet. It's essentially the engine room of my workbook and helps me keep my spreadsheets ...

I have an excel file a coworker sent me that lags tremendously. I tried to narrow the problem, until I deleted all the data on the sheet, and the file would still lag. I checked the file for any ...