Outlook calendar app hasn’t sync with desktop app.

[selley13]

Installed outlook app on iphone 8, not all of the contacts are there or all calendar dates

 

[Just_Me_D]

Make sure the information contact Ned in your desktop app is syncing to the cloud. Login to Outlook.com via a browser to verify. What is seen via the web browser should get synced to your iPhone 8 and your computer.