@ljrk @afewbugs You think it is a good idea when Nextcloud developes and implements a proprietary protocol? Hm.
I am using Thunderbird and the Tasks app with recurring tasks. They sync with Nextcloud. It works.

@vfrmedia @emily_s @afewbugs Besides that: There is exactly one client for the Exchange Server, this is Outlook. But there are tons of clients for Nextcloud.

@vfrmedia @emily_s @afewbugs If you compare to a client for the Exchange Server, you should compare with a client for Nextcloud. There is no UI for the underlaying Exchange Server. Therefore you should compare to a client like Thunderbird. There is no problem with recurring taskes generated in Thunderbird. They are syncronized with Nextcloud and other clients. Even the Tasks app for Android is capable generating recurring tasks. It is "just" Nextcloud's web UI which does not support it.