I have had a few different users let me know that they are unable to open some Excel files because Excel says they are corrupt. The common configuration of the users that I have seen having this problem is Windows 7 Pro/Enterprise 32 bit and Microsoft Office 2007 with all available updates. I have taken these same "corrupt" files and attempted to open them on a Windows 7 machine running Office 2010 and run into the exact same problem. However, Windows XP machines running Office 2007 do not appear to have the problem. The problem happens even if you save the emailed file directly on the computer first and then open or if you open the file directly in Microsoft Outlook. The exact sequence of messages after you open the file are the following:
"Excel found unreadable content in 'nameofexcelfile.xls'. Do you want to recover the contents of this workbook? If you trust the source of this workbook, click Yes."
after you click yes:
"Unable to read file."
after you click ok:
The workbook cannot be opened or repaired by Microsoft Excel because it is corrupt.
and all you can do is click ok.
Any help I could get in resolving this would be greatly appreciated. I will post additional relevant info as I come across it.