Some users report that their "New Skype Meeting" button disappears so they can no longer make a meeting into a Skype meeting.
Follow these steps to add it back in:
- Start Outlook.
- Choose File | Options | Add-Ins
- On the Manage menu, select COM Add-Ins and select Go.
- Click the box next to Skype Meeting Add-in for Microsoft Office 2016 and click OK to save the changes.