Unfortunately no one can be told what Phantom Linux OS is - you have to see it for yourself.
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Outlook support for Mac provides a comprehensive system to help you troubleshoot problems and effectively use the Outlook application on your Mac device.
At the top of the message list, you can choose how you want to view the list.
These often help resolve issues without the need to contact support.
You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally.
Or, you can disable any antivirus software add-ins that are installed in Outlook.
User profiles help make sure that your personal preferences are used when you log on to Windows.
This happens to accounts that are configured in the iOS Mail app.
To fix this problem, on the ribbon, select the Send/Receive tab, then, in the Preferences group, select Work Offline to toggle between offline mode and online mode.