Hi, Mozilla Thunderbird graciously provides online calendars for holidays in different countries. However, since last check (possible since a few days), there seems to be a configuration error: https://www.thunderbird.net/media/caldata/DutchHolidays.ics redirects to: https://www.thunderbird.net/media/caldata/autogen/DutchHolidays.ics which redirects to: https://www.thunderbird.net/media/caldata/autogen/autogen/autogen/DutchHolidays.ics which redirects to: https://www.thunderbird.net/media/caldata/autogen/autogen/autogen/autogen/DutchHolidays.ics which redirects to: https://www.thunderbird.net/media/caldata/autogen/autogen/autogen/autogen/autogen/DutchHolidays.ics which redirects to: https://www.thunderbird.net/media/caldata/autogen/autogen/autogen/autogen/autogen/autogen/DutchHolidays.ics which redirects to .... Well, you get the drift :) Firefox is giving me a warning "The page isn’t redirecting properly. An error occurred during a connection to www.thunderbird.net. " Please test yourself in Firefox. If the error is still there, please kindly forward it to the thunderbird.net webmaster. If the error is no longer there, it was fixed, and you can close this ticket. Thanks again for providing this service, I'll look forward to continued use!