2010 Outlook Contacts sharing

user was trying to share {personal contacts} of a large list on hotels for City Business that she updates regularly, with her coworkers.  She was able to do it with a few coworkers but her supervisor receives
this message:
Folder Sharing is not available with the following entries because of permission settings on your network {and it gives her supervisor's email address}

why wouldn't that apply to all?  Is there a setting to check in Outlook 2010 on her supervisor's Outlook box?  Either settings within her thick client or the OWA {which most of the server side settings are stored for this organization I hear}.

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Has she tried to select her supervisor from the Global Address List instead of using the shortkey list when typing her email.  Also has her supervisor tried to go to calendar view in outlook and try to open a shared calendar by searching for the person?
IDUTRIAuthor Commented:
Even though we're talking about Contact sharing here, you're saying the method of sending the Invitation to share contacts in Outlook 2010 matters by the way the person is picked out from the global addressbook?
Yea sorry I was working on calendar sharing when I answered this.  Yes it matters, the user has to be picked from the GAL when using exchange atleast in my network it is.

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