HI friends recently I was trying to open the Excel 2007 file in the Excel 2011 in office Mac 2011, but however it get open there in the Excel 2011 but whenever I try to make an update there in that sheet I get the message that the file is being protected and read only. But according to my information I have not make any of the internal setting to make Excel 2007 file protected or read only file. So I just want to know why these things happen there in Excel 2011 that it fails to update the file which is created in the lower version of Excel. If you people have any ideas or any suggestion for this then please let me know. I am very much confused please help.
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