Using New Outlook on Windows for personal email, calendar, and contact management
I haven't scrolled through all of the comments here, so I'm not sure if this was ever resolved. In case it's helpful, though, I was just able to share a contact list in Outlook by choosing the "Forward Contact" option after selecting the list I wanted to share (NOT the "Share Contacts" option - I was trying to use that, and ended up here b/c I couldn't make it work). Then, I selected "As an Outlook Contact". This created an email with the contact list as an attachment that I could then forward to colleagues.