OSX 10.11.1, Owncloud, Apple calendar

Does not work any­mo­re, Apple deci­ded to chan­ge the URL, in par­ti­cu­lar, the PROPFIND looks like so now:

/remote.php/caldav/calendars/rainer/inbox/

for wha­te­ver reason. In the past, it was

/remote.php/caldav/calendars/rainer/

So we need to remo­ve /inbox/

RedirectMatch temp ^/remote.php/caldav/calendars/(.*)/inbox/ https://<your_server>/remote.php/caldav/calendars/$1/

And Calendar.app is hap­py again 🙂
You may sub­sti­tu­te temp with per­ma­nent after testing.