Can't open excel file
 

Hello all , I use Excel 2007. When I open file , Excel alert as this "
Excel found unreadable content in MBwcp.xlsx (my file name) Do you want to
recover the contents of this workbook? If you trust the source of this
workbook , click Yes "
Then , I click Yes , it said "This file cannot be opened by using Microsoft
Excel. Do you want to search the MS office online for a converter that can
open the file "
If , I click yes , it connect to Bing and find word KB967567 but not found
and can't open file.
If , I click no , the file can open but didn't have the latest of my job.
Please help what can I do to open this file with the latest my job ?