Dolphin can't connect to WebDAV share

I’m trying to use Dolphin to access a WebDAV share on my server. I have verified that the server is set up correctly using some other clients, which can manage files on the share without any issues.

When using the “Add network folder” wizard with the correct parameters, it opens an address like webdavs://webdav.mydomain.com:443/directory/, but shows that the path doesn’t exist. When refreshed, it gets stuck on “Loading…”.

Is the address format wrong? Maybe a library is missing? Please tell me what to try.

Maybe try webdavs://webdav.mydomain.com:443/directory (without the trailing slash)

Same result. I’ve tried multiple variants like this. Usually, it will outright tell me that the folder doesn’t exist.

I strongly suspect that a library is missing. Can you tell me what’s required for it to work?