That's unlikely. Why don't you provide more details? Like your Outlook version, the recipient's Outlook version, exactly what steps you used to send the vCard, and what the recipient saw when he tried to open it.
--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
"Sprinks" wrote in message news

I sent a colleague my VCard today, but he said he was unable to open it.
Does anyone know whether the attachment might be filtered by either their
server or by a Windows setting?
Thank you.
Sprinks