Lately, we’ve been seeing issues involving Outlook staying in Offline mode and refusing to switch back to Online. We will discuss a couple of different ways to fix Outlook stuck in Offline Mode bug.
How to Fix Outlook Stuck in Offline Mode Bug
If the status bar at the bottom of your Outlook window shows either of these status indicators, it means there’s no connection between Outlook and your mail server.
or
You can’t send or receive email until you reconnect. Here’s how.
When the Status is WORKING OFFLINE
Click Send/Receive > Work Offline to turn to reconnect.
Notice that when you’re working offline, the button looks blue:
However, the button has a white background when you have connection and working online:
To confirm that your connection, make sure the Work Offline button isn’t blue.
NOTE: If you are still having problems, make sure that your internet connection is working properly.
Applies To: Outlook 2013, Outlook 2016
These are just the basics of how to fix Outlook stuck in Offline Mode bug. Contact us with the link below for more information!
Source: support.office.com