Although you may have supplied the correct authentication details, the authentication failed because the method that the server is using is not supported by the KDE program implementing the protocol %1.
Alhoewol jo mooglik de goeie autentikaasje oanlevere hawwe, is de autentikaasje mislearre trochdat de metoade dy 't de tsjinner brûkt net stipe wurdt troch it KDE- programma dat it protokol% 1 oanleveret.