Assuming you are on Windows 10, from your Desktop, hit the Search Magnifying glass (Next to the Start icon in the left hand side of the desktop.
Then type Run and open the Run Desktop App.
Then type Outlook /safe and hit OK.
Outlook will now open in safe mode.
Now try to connect.
Disable any Outlook add-ins and restart Outlook.
See More .
Outlook is disconnected It could be that Microsoft Outlook has been disconnected from your internal mail provider or Exchange server. If that is the case, you’ll be able to spot that on your Outlook lower status bar. This is probably due to a temporary hiccup in your connectivity to the network/ VPN.
Then navigate to the Send / Receive tab. In your right hand side, you’ll notice the Work Offline button as shown below. Outlook will attempt to re-connect.
Why is my outlook not working?
You might find out that your Outlook has been disconnected from the server. That will be visible in the status bar in the bottom of the screen as shown below. This is probably due to a temporary hiccup in your connectivity to the network/VPN. When back online, Outlook might automatically try to re-connect back to the server.
How to troubleshoot Outlook when it doesn’t resolve?
If it doesn’t resolve, you can perform Outlook level troubleshooting. Check if the outlook is in offline mode. Please see the following steps to check the mode and make it online if it’s in offline mode. Step 2 – Click on ‘Disconnected’ at the bottom right corner of Outlook. Note: You should do it as a first troubleshooting step.
What happens when the client disconnects from the Exchange Server?
Shortly after the disconnection, the client reconnects to the Exchange server. This behavior continues repeatedly. , the msexchange, rpc, proxyapp Pool is continually recycled.