A: Following steps helps you when Outlook not working:
Check your device's internet connectivity.
If suspecting profile corruption, think about creating a new Outlook profile.
To determine if add-ins are the problem, launch Outlook in Safe Mode.
Regularly update your Outlook to its latest version.
In dire situations, uninstall and then reinstall the Outlook application.
For those on Outlook.com, monitor for any server status alerts online.