Based on Windows 10
1.
  1. Right Click on the Windows Button

  2. Click on Run

  3. Type in Control Panel

  4. Click on OK
  5. Click on the Search and type in mail

  6. Click on 

  7. Click on Show Profiles

  8. Click on Add

  9. Give it a name like O365

  10. Click on OK
  11. Enter Your Details

  12. Click Next
  13. You might be asked for your password
  14. Once OK,
  15. You should see something like this

  16. Uncheck 'Set up Outlook Mobile on my Phone, too',
  17. Click Finish