Use iCloud for Windows to synchronize calendar and contacts with Outlook. You can use iCloud for Windows to synchronize your calendar and contacts between your iOS device and Outlook. To install iCloud for Windows, use the following steps. These steps are from Outlook’s Help.

1. Download and install iCloud for Windows.
2. After installation, launch the iCloud app and sign in with your Apple ID and password.
3. In the iCloud app, select the option to sync Contacts and Calendars, then click Apply.
4. Once the setup has finished, launch Outlook. Your iCloud contacts and calendars should now be synchronizing with Outlook.