Yup, Googled it first before posting. It's a .xlsm file from Excel 2016. Everything I've found was for older .xls files. This is the answer for .xls http://www.excelsupersite.com/how-to-unprotect-an-excel-spreadsheet-if-you-have-lost-your-password/ I tried converting it to .xls and zipping it as mentioned in the comments on that site, all failed.