You don't necessarily need Microsoft Excel to work with an .xlsx file Reviewed by Ryan Perian This article explains what XLSX ...

Spreadsheets that contain complicated formulas and a lot of data can take a while to load when you open them in Excel 2007, but that's not the only reason spreadsheets can be slow to load. Microsoft ...

If the calculation option has been set to automatic, change it to manual. Doing so will also prevent the workbook from recalculating the values and this can make file accessible. For this, Click on ...

My work requires the use of several very large Excel files, and they take forever to open. In fact, they even take a long time to save and close. I’ve thought of breaking them up into small components ...