Background
When opening an Excel workbook or creating a new workbook from a template, macros may be disabled depending on your macro security settings in Excel. This may disable certain functionality of the workbook.
Resolution
This article is not intended to provide complete information on the topic of Excel macro security or to provide a definitive answer for your specific security needs. For a more thorough understanding of macro security in Excel, we recommend reading the following topic on the Microsoft Office website:
http://office.microsoft.com/en-us/excel/HA100310711033.aspx#12
Most users of Event 1 Office Connector find that the following steps meet their Excel macro security needs:
1. Start Excel and click the Microsoft Office Button
2. Click Excel Options.
3. Click Trust Center and then click Trust Center Settings
4. Click Macro Settings

5. Click Disable all macros with notification
6. Click OK
7. Click OK
8. Open your workbook
9. The Security Warning bar will be displayed just below the ribbon. Click Options.

10. Below Macros & ActiveX, click Enable this content
Notes