In 03/2021 konnte ich mich vom Windows-PC per WinSCP noch problemlos an meinem WebSpace mit SFTP anmelden.

Ich habe die Konfiguration nicht geändert, bekomme aber jetzt die Meldung im WinScp-Log "Server refused our key".

Komischerweise funktioniert die Verbindung unter Linux mit "sftp" SSH-Key basieren weiterhin ohne Probleme.

Hier noch ein Ausszug aus dem WinScp-Log:

. 2021-10-14 22:27:27.447 Host key matches cached key
. 2021-10-14 22:27:27.447 Initialised AES-256 SDCTR (AES-NI accelerated) [aes256-ctr] outbound encryption
. 2021-10-14 22:27:27.447 Initialised HMAC-SHA-256 outbound MAC algorithm
. 2021-10-14 22:27:27.447 Initialised AES-256 SDCTR (AES-NI accelerated) [aes256-ctr] inbound encryption
. 2021-10-14 22:27:27.447 Initialised HMAC-SHA-256 inbound MAC algorithm
. 2021-10-14 22:27:27.457 Detected network event
. 2021-10-14 22:27:27.457 Enumerating network events for socket 1252
. 2021-10-14 22:27:27.457 Enumerated 1 network events making 1 cumulative events for socket 1252
. 2021-10-14 22:27:27.457 Handling network read event on socket 1252 with error 0
. 2021-10-14 22:27:27.457 Waiting for the server to continue with the initialization
. 2021-10-14 22:27:27.457 Looking for incoming data
. 2021-10-14 22:27:27.457 Looking for network events
. 2021-10-14 22:27:27.457 Reading key file "XXXXXXXXXXXX.ppk"
! 2021-10-14 22:27:27.477 Using username "XXXXXX@XXXXXXXXX.homepage.t-online.de".
. 2021-10-14 22:27:27.527 Detected network event
. 2021-10-14 22:27:27.527 Enumerating network events for socket 1252
. 2021-10-14 22:27:27.527 Enumerated 1 network events making 1 cumulative events for socket 1252
. 2021-10-14 22:27:27.527 Handling network read event on socket 1252 with error 0
. 2021-10-14 22:27:27.527 Waiting for the server to continue with the initialization
. 2021-10-14 22:27:27.527 Looking for incoming data
. 2021-10-14 22:27:27.527 Looking for network events
. 2021-10-14 22:27:27.527 Server offered these authentication methods: publickey,password
. 2021-10-14 22:27:27.527 Offered public key
. 2021-10-14 22:27:27.547 Detected network event
. 2021-10-14 22:27:27.547 Enumerating network events for socket 1252
. 2021-10-14 22:27:27.547 Enumerated 1 network events making 1 cumulative events for socket 1252
. 2021-10-14 22:27:27.547 Handling network read event on socket 1252 with error 0
. 2021-10-14 22:27:27.547 Waiting for the server to continue with the initialization
. 2021-10-14 22:27:27.547 Looking for incoming data
. 2021-10-14 22:27:27.547 Looking for network events
. 2021-10-14 22:27:27.547 Server refused our key

WinSCP-Version: 5.19.3

Hat da ev. jemand eine Idee zu ?

Danke und Gruß