Hi, I had two users which could tell me how they added calendars and had that recreation / multiplying problem.
I could reproduce it on my Mac: Working caldav account with different privat and subscribed calendars from SOGo Adding a new Calendar in Apple Calendar throws an error: „The Server reported an Error“ „Retry“ „OK“ In the SOGo logs I do get at that time: May 10 15:21:28 sogod [25734]: |SOGo| starting method 'MKCALENDAR' on uri '/SOGo/dav/greinick/Calendar/B0634B0A-AF9D-480B-8B19-E26401EE7FD2/' May 10 15:21:28 sogod [25734]: |SOGo| request took 0.000593 seconds to execute May 10 15:21:28 sogod [25734]: 172.17.22.155 "MKCALENDAR /SOGo/dav/greinick/Calendar/B0634B0A-AF9D-480B-8B19-E26401EE7FD2/ HTTP/1.1" 401 0/1217 0.001 - - 0 May 10 15:21:28 sogod [25734]: |SOGo| starting method 'MKCALENDAR' on uri '/SOGo/dav/greinick/Calendar/B0634B0A-AF9D-480B-8B19-E26401EE7FD2/' 2019-05-10 15:21:28.552 sogod[25734] EXCEPTION: <NSException: 0x5639473dd430> NAME:NSInvalidArgumentException REASON:That name already exists INFO:(null) Quit Apple Calendar and it COULD happen, that I do get the same error as above: „The Server reported an Error“ „Retry“ „OK“ and than the created calendar gest doubled …. Or: try to delete the calendar from Apple Calendar, I do get the error and the calendar gets copied once more. Furthermore I see this message in Apple Calendar as Error: Antwort des Servers „502“ an Vorgang CalDAVCalendarSplitDualTypeCalendarQueueableOperation. Within a few clicks adding, try to remove I have generated about 10 Copies …. HTH for debugging … and resolving … or what would be the solution? As a workaround I can suggest the user not to create calendars or delete them by Apple Calendar, but that could not be the solution at the end of the day ….Or may be I did miss some config or feature? … Regards . Götz
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