If the status bar at the bottom of your Microsoft Outlook window shows Working Offline, it means Outlook has disconnected from the mail server. You can't send or receive email until you reconnect.
The first thing to check is your Internet connection by trying to connect to a website. If your Internet connection is working, try reconnecting to the mail server by following the steps below:
- Click Send/Receive.
Notice that when Outlook is set to Work Offline, the button is highlighted.
- Click Work Offline to return to working online.
- After you reconnect to the server, the Work Offline button has a plain background: