Why is my calendar blank?

Projects as Resources

Make sure you don’t have Projects as Resources set.

If your calendar looks blank, you may want to check this quick setting.

Inside the Calendar > Gear Icon > Settings (tab) inside the pop-up menu > under Resource Settings > Projects as Resources: select No > Close

This setting is only used when viewing the calendar as a Gant chart to manage your projects. The calendar should refresh to use people as resources as usual.

Project as Resource