I recently upgraded my 365 subscription from 2013 to 2016, and the worksheets in one of my workbooks are now all password protected. I can copy and paste the contents to a new worksheet, but this particular workbook has 25 tabs, so would prefer not to copy and paste. So far this is the only workbook that is affected. Can anyone suggest a fix or a add-in to remove the password, checked online but was a little nervous about using anything I found, apparently MS uses tougher encryption for Excel 2013 and 2016.
Thanks
Al