I inherited several excel documents that I need to work on. While I am able to modify cells, I am unable to insert and delete rows, format cells, change height, column width, etc. etc.
I am using an administrative account, and the file / directory ownership includes Everyone with Full Access.
Finally, the document itself appears to be shared (it says it in the title bar). I tried unsharing the workbook as well as un-grouping the sheets, but neither worked.