Disablesyncsliderforsharedmailbox [Must See]
defaults write com.microsoft.Outlook DisableSyncSliderForSharedMailbox -bool true To revert:
Run the following command and then restart Outlook: disablesyncsliderforsharedmailbox
defaults write com.microsoft.Outlook DisableSyncSliderForSharedMailbox -bool true To revert:
Run the following command and then restart Outlook: disablesyncsliderforsharedmailbox