"Greg Mansius [MSFT]" wrote in message
...
Hi,

You probably do not have the permissions to modify the registry data
needed to disable this prompt.

1. Are you using Windows Vista or Windows XP?
2. What is the exact text of the warning?
3. Are you a member of the local Administrators group?
4. Do you also experience this warning for other files (Excel, PPT, etc.)?

"You should only open attachments from a trustworthy source"
The checkbox to disable the message is greyed out.

I have admin. status.