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Thanks Mohammad, these settings look to be correct in our admin console so I will work with Microsoft and see what is going on.
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I have a client using Outlook 2013 on Exchange Online that is trying to share contact lists with a few external users. &nbsp;When they email the group to an external user it shows up as a blank Outlook item in Outlook. &nbsp;Is this a limitation of Exchange Online?<br />
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Thank you
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I have a client using Outlook 2013 on Exchange Online that is trying to share contact lists with a few external users.  When they email the group to an external user it shows up as a blank Outlook item in Outlook.  Is this a limitation of Exchange Online?

Thank you

Sharing Contact Lists with external users

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.