Download the file from this link: https://www.stcloudstate.edu/events/ics/academic-calendar.ics
You are using the current version if “Try the new Outlook” is toggled off in the upper-right corner of your Outlook app:
You are using the new version if “New Outlook” is toggled on in the upper-right corner of your Outlook app:
The calendar will now be imported into Outlook: