

Click the Restart Outlook button to upgrade. An 'Outlook restart required' dialog will appear when your calendar sync is about to be upgraded to REST. REST calendar sync is slowly being rolled out into Production. *Office 365 mailboxes require REST calendar sync. The Teams Meeting button will only appear in the Outlook for Mac ribbon if Outlook is running Production Build 16.20 and later.* The Teams Meeting button is missing in Outlook for Mac. Whereas others mentioned that Store icon is only available with Office 365 and not the retail/volume licensing version.

Outlook 2016 Missing Store Button Outlook. On my personal computer (not Windows or Mac). Skype for Business icon has disappeared from Outlook web app Hello, everyone! I use Office 365 web apps frequently when I'm not in the office-I can't install full versions of Outlook, Excel, etc.
