Have you ever tried getting the error: The file is corrupt and cannot be opened, when trying to open an .xls file in Microsoft Excel 2010?
This solution should help you with this problem, just follow the steps below:
1. Open Excel 2010.
2. Click on File > Options.
3. Select Trust Center > Trust center settings.
4. Select Protected view.
5. Uncheck all the options under Protected View > OK.
6. Restart Excel 2010 and try to open Excel documents.