To enable or disable Office Viewer integrated in the Microsoft Edge browser, toggle the switch against 'Open Office Files in the browser' setting.

While you won't be able to edit Excel files with the iPad's Quick Look file viewer, you will be able to view them and even copy and paste data from them.

If your Excel files are opening in Notepad on Windows PC, here's how you can reset the settings to make .xls, .xlsx, etc files open in Excel.

You have just a few choices when working with PDFs and Microsoft Excel. We'll show you how to export PDFs from Excel to Acrobat, and export from Acrobat to Excel.