A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Thank you for your reply. I am more interested in what has gone wrong. For example, does Excel 2013 restrict the number of password attempts? Has the file, and its variants using the same password, become corrupted in some way? Has it got something to do with using the Windows phone in the first place? I want to avoid similar situations - Thanks for your help.