Certificate Trust dialog

The Certificate Trust dialog pops up if a secure connection (ldaps or StartTLS) is established and the validation of the server's certificate failed.

Dont't trust this certificate.If you don't trust the certificate choose this option, the connection won't be established
Trust this certificate for this session.The certificate is only valid within this session and added to the temporary certificate store. After a restart of Studio you are asked again You could see all temporary trusted certificates in the Certificate Validation preferences.
Always trust this certificate.The certificate is permanently valid and added to the permanent certificate store. You could see all permanent trusted certificates in the Certificate Validation preferences
View Certificate...Opens the Certificate Viewer dialog, where you could examine the certificate.