Excel 2010 says the file is corrupt and won’t open

Excel 2010 says the file is corrupt and won’t open

Excel 2010 says the file is corrupt and won’t open.

In Microsoft Excel:

Click File, Options, select Trust Center

Click the button for Trust Center Settings

Select Protected View

Uncheck the Box for Enable attachments for Outlook file attachments

Uncheck the Box for Enable protected view for files origionating from the internet