I can't get my windows calendar to sync with my iphone. All calendars are checked

Hey karole288,

We'd recommend reviewing the information in this article as it provides steps to set up additional calendars on iPhone: Set up multiple calendars on iPhone - Apple Support

"Set up iCloud, Google, Exchange, or Yahoo calendar accounts

1. Go to Settings  > Calendar > Accounts > Add Account.
2. Do any of the following:

• Tap a mail service (iCloud, Microsoft Exchange, or Google, for example), then sign in.
• Tap Other, tap Add CalDAV Account or Add Subscribed Calendar, then enter your server and account information."

If that's not working as expected, you may want to provide additional information about the situation.

What happens when you try to sync the calendar? Are you getting an error message?

What steps are you taking to attempt to sync your Windows calendar to iPhone?

Do you have any other calendars set up on your device? If so, are they syncing properly?

Thanks!