A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi,
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Are doing any formatting changes to the document?
If yes, then such as formatting changes, are not tracked.
To view all changes that have been tracked, select the When check box, click All in the When list, and then clear the Who and Where check boxes.
You may refer to this link which describes in detail about the track changes feature in Excel 2010:
http://office.microsoft.com/en-us/excel-help/track-changes-in-a-shared-workbook-HP010342961.aspx#BM4
If you need any further assistance, you may also post the question in this link for more help:
http://social.technet.microsoft.com/Forums/en/excel/threads
Hope this helps.
Thank you.