Also, if you're using multiple versions of Excel on the same computer, the default program for opening your files may be a different version of Excel than you'd prefer to use.

Microsoft has disabled Excel 4.0 macros by default in the latest release of its spreadsheet software to help customers protect themselves against related security threats. That setting, released ...

A Microsoft announcement that the company would be disabling macros as a default feature in Excel 4.0 has been greeted as a step that "would really help defenders".