Fri, 10 Apr 2026 10:04:36 +0000 https://bugs.horde.org/ticket/13403 Synchronization of shared calendars with CalDAV not working Synchronization of a shared calendar I own using CalDAV in Mozilla Thunderbird 24.6.0 and Lightning 2.6.6 works fine. When I try to open the CalDAV subscription URL with a browser I see the files in the DAV view. On the other hand it is not possible to synchronize a shared calendar I do not own but have been granted full access rights. On opening the CalDAV subscription URL in a web browser I get attached error. Synchronization works perfectly for my own and foreign shared calendars when using WebDAV/ICS Subscription URL. Tue, 29 Jul 2014 13:45:44 +0000 https://bugs.horde.org/ticket/13403#t84960 I must apologize, after having a typo in the captcha field the attachments was deleted. Tue, 29 Jul 2014 13:50:19 +0000 https://bugs.horde.org/ticket/13403#t84961 Bug 12380 Thu, 31 Jul 2014 09:35:32 +0000 https://bugs.horde.org/ticket/13403#t84995