Policy
Configure Outlook Anywhere user interface options
This policy setting allows you to determine whether users can view and change user interface (UI) options for Outlook Anywhere. If you enable this policy setting, users can view and change UI options for Outlook Anywhere. If you disable or do not configure this policy setting, users will be able to use the Outlook Anywhere feature, but they will not be able to view or change UI options for it.
7c1a67e891ae L_EnableExchangeOverInternetUserInterface Registry
Copy registry mappings
HKCU\software\policies\microsoft\office\16.0\outlook\rpc\enablerpctunnelingui Policy notes
This policy setting allows you to determine whether users can view and change user interface (UI) options for Outlook Anywhere. If you enable this policy setting, users can view and change UI options for Outlook Anywhere. If you disable or do not configure this policy setting, users will be able to use the Outlook Anywhere feature, but they will not be able to view or change UI options for it.