Check out this link to explain what's happening and how to stop it:

http://www.contextures.com/xlfaqMac.html#NoMacros

Hope this helps.

Pete

On Jan 13, 4:35*pm, Karlene wrote:
I have a shared workbook that everytime someone opens it the macro warning
comes up. *I cannot find a macro in the workbook and wish to prevent the pop
up box.

Karlene