MS has provided this information:

http://support.microsoft.com/kb/927150/en-us

--
Jim
"Felipe" wrote in message
...
| Hi,
| I'm running into the following situation wich seems to present a different
| behaviour in Excel 2007 than in 2003 and one that I can't understand. I
will
| appreciate any help or comments.
|
| Macro Security = "Disable all macros with notification".
|
| When opening a workbook (.xlsm) with a macro included on it, the message
| bar correctly shows me the "Security Warning: Macros have been disabled"
| message, and offers me the option to "Enable this Content" when clicking
on
| the Options... button.
|
| After protecting the same workbook with the Protect Workbook feature and
| opening the file again, the same message is shown in the message bar but
the
| "Enable this Content" option is not available in the dialog opened with
the
| Options... button and the following message is shown on the same dialog:
|
| "This file contains encrypted macros that have been disabled because there
| is no antivirus software installed that can scan them. To run these
macros,
| remove the encryption or permission restrictions on the file."
|
| Any comments on why the Protect Worksheet is interfering with the macro
| security? I haven't found a way to enable the macros without unprotecting
the
| workbook. I've test this with a very simple sample workbook.
|
| Thanks,
| Felipe