I selected custom settings, and disabled the 1st option in the custom settings : Sync contacts/calendar and other data with microsoft during the windows 10 upgrade from windows 7.
I've upgraded to windows 10, and have added my microsoft outlook account to both my windows 10 calendar app and my iphone settings. But the events are not syncing…. I tried adding a test event on my windows 10 calendar app, but it didn't sync over to the ios. I checked it's (win10) settings and the setting for the account are only "download content" not sync/upload content. I think this maybe due to the custom setting disabled during the upgrade installation.
Also, another option was that the calendar weather data was in Fahrenheit, while I have set my settings to metric in the control panel settings. There are no settings for the weather in the calendar app, so I don't know how to enable metric system for the weather displayed in the calendar. The separate weather app displays the metric via it's own option, but the calendar app doesn't.
Any way to solve these two errors?
Thanks.
Best Answer
Read the article How To Sync iCloud Calendar With Windows 10 Calendar App.
It explains why the sync doesn't work and describes a workaround for syncing iCloud calendar with Windows 10 calendar app, but with the restriction of ‘read-only’ calendar syncing.
If that's not enough for you, you will need to wait for Microsoft to improve the implementation of its CalDAV and CardDAV protocols for calendar. As they are already working for Mail, it is probably just a bug that should be solved soon enough, since the problem was already signaled to Microsoft.