If you don’t have the iCloud application installed on your Windows, then install it first by visiting its website. To learn how to add an iCloud calendar to Outlook, just follow these steps: In this, you can either sync all iCloud calendars or just select the calendars of your choice. Method 1: Sync an iCloud Calendar with Outlook via its Appįor this method to work, you just need to use the iCloud’s desktop application to link it to your Outlook account. Here’s how you can add an iCloud calendar to Outlook via its app or website. Since Outlook doesn’t support the import of CalDEV files on Mac, only the web-based solution can be implemented on Mac. If you want, you can take the assistance of iCloud’s app or visit its website to export an iCloud calendar to Outlook. Part 1: How to Sync an iCloud Calendar with Outlook: via iCloud App and Website Part 2: How to Fix the iCloud Calendar not Syncing with Outlook Issue?