Outlook Setup Error trying to connect contacts and calendars

iCloud calendar and contact sync was working for several months on my PC when I noticed it was no longer syncing. So, I disabled "contacts and calendars" in the iCloud app, but when I attempt to reactivate them, I get an error message: "Your setup couldn't be started because the iCloud server couldn't be reached".

This obviously isn't the case, nothing is wrong with the iCloud servers. There is a link to report the error by opening a new email message with some diagnostic info, but it un-helpfully does not tell me where to send it. Thanks, Apple.

Does anyone have any insight? I am running Windows 11, latest updates.