Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue.
Do you have an Office 365 account?
The Support and Recovery Assistant for Office 365 can diagnose and fix several Outlook issues for you, including fixing your Outlook profile. You can download the tool (English only).
Repair a profile in Outlook 2010, Outlook 2013, or Outlook 2016
In Outlook 2010, Outlook 2013, or Outlook 2016, choose File.
Choose Account Settings > Account Settings.
On the Email tab, choose your account (profile), and then choose Repair.
Note: The Repair option isn't available if you're using Outlook 2016 to connect to an Exchange account.
Follow the prompts in the wizard, and when you’re done, restart Outlook.
Outlook connection still not working?
Run Windows Update to make sure you have the latest updates for Outlook and other desktop apps for Office 365.
Download and run the Support and Recovery Assistant for Office 365 (English only).