google-calendarsynchronization
I have several calendars that are externally managed, and I have imported them into my Google Calendar using the "Add by URL" option. I have signed into my Google account within the Windows 10 calendar app, and my main events, birthdays, holidays are synced correctly, but none of the calendars that I have added by URL are synced at all.
Is there a way to also sync these?
There's an article on this here. I've not checked that it works, but it seems pretty straight forward. The essence is that instead of importing the calendar, you add the URL of your event feed as a public calendar - here's a summary of the steps:
[Update: to make answer more complete]
If you run into issues with private events not showing properly then check out eventbusyfix.info. This site acts as an inbetween to clear the private flag and enable Gmail to show them properly (Thanks to prestomation for this tip)
[/Update]
Hope that helps!
You can do this by clicking "Add | Add by URL" at the bottom of the left nav on your google calendar homepage.
Figure: Adding an iCal to sync is as easy as adding the URL
You will be asked to choose to sync with your main calendar or a new named one, but if you stick it in the main calendar you should then get it on your other devices.
Best Answer
The solution to this problem is to go to https://calendar.google.com/calendar/syncselect and tick the calendars you wish to be synchronized. Then go back to Windows Calendar, and refresh the synced calendars. I found the quickest way to do that was to open the settings panel, go to "Accounts", select the appropriate account, select "Change mailbox sync settings" and toggle the "Calendar" option under "Sync options" off and then on again to refresh the new list of calendars available to sync from Google.
This appears to be undocumented for Windows, but the solution is shown in Google support with the title "See Google Calendar events on Apple Calendar", under the "Change which calendars get synced" heading.