Hello, How do you see that it only works on one direction? Can you please provide exact steps to reproduce the problem? Existing calendar entries from other accounts (Google calendar, …) won’t be synced, only new events which are entered into the respective DAVx⁵ account.

Hello, There is no logout in WebDAV. Within a session, DAVx⁵ supports cookies, but every sync is a session. Sessions should not be shown as “active connections”. What does ownCloud say about this?

@Perflyst Does the chain contain all intermediate certificates?