If your holidays aren't showing correctly in Outlook, reset your PeopleHR calendar feed:
Click Access Button
then click Planner.
Click Calendar Feed then click Reset.
Click Save then update the Outlook URL.
đNote: To stop PeopleHR holidays showing in Outlook, remove the subscribed PeopleHR calendar from Outlook.
đ¤Tip: Add PeopleHR to Outlook by subscribing with the calendar URL, not by importing an .ics file. An imported file adds the holidays to your main calendar, and they're hard to remove.