Hi,
Please have a look at the article below:
How to use the vCard feature in Outlook
http://support.microsoft.com/kb/290840
By the way, what is the version of your outlook?
Please try to post the detail error information here. Also I recommend you to try to post the isseu in outlook forum to get more relevant help.
http://social.technet.microsoft.com/Forums/en/outlook/threads
Xiu Zhang
TechNet Community Support
