A properly working SFTP connection stops working after a server update to Ubuntu 22.04.
Other FTPS clients connect properly to the same server.
This is the VERBOSE log.
[2022/09/14 12:55:53.616] [ERROR ] [ 17256] [SERVICE ] [ nd3 sdk version - child nd3svc : 3.16.589 ] [Child.cpp:129]
[2022/09/14 12:55:53.616] [DEBUG ] [ 17256] [SERVICE ] StartChild:: connected to pipe \.\pipe\nd_mount_4 [Child.cpp:302]
[2022/09/14 12:55:53.616] [DEBUG ] [ 17256] [SERVICE ] StartChild:: created to client pipe of \.\pipe\nd_mount_4 [Child.cpp:311]
[2022/09/14 12:55:53.616] [MESSAGE ] [ 17256] [FILESYSTEM] FS_Initialize
[2022/09/14 12:55:53.616] [DEBUG ] [ 17256] [SERVICE ] CChildPipe::request_info:: 3948 received response [ChildPipe.cpp:136]
[2022/09/14 12:55:53.616] [DEBUG ] [ 17256] [SERVICE ] StartCache:: ECO - SRVDOCKER TEST[4] [Child.cpp:151]
[2022/09/14 12:55:53.663] [DEBUG ] [ 17256] [SERVICE ] CACHE PATH : C:\ProgramData\NetDrive3_cache_\prjweb2\ECO - SRVDOCKER TEST [Child.cpp:164]
[2022/09/14 12:55:53.663] [DEBUG ] [ 17256] [SERVICE ] CACHE PATH : C:\ProgramData\NetDrive3_cache_\prjweb2\ECO - SRVDOCKER TEST [Child.cpp:168]
[2022/09/14 12:55:53.663] [DEBUG ] [ 17256] [CACHE ] Cache path C:\ProgramData\NetDrive3_cache_\prjweb2\ECO - SRVDOCKER TEST, 380.668.739.584 bytes left
[2022/09/14 12:55:53.663] [MESSAGE ] [ 17256] [CACHE ] Cache initialized : C:\ProgramData\NetDrive3_cache_\prjweb2\ECO - SRVDOCKER TEST, Storage limit : 4.294.967.296 bytes
[2022/09/14 12:55:53.679] [DEBUG ] [ 17256] [CACHE ] Cache configuration : 3, 1048576, 268435456, 60000, 536870912, 30000, 60, 3600, 30, 60
[2022/09/14 12:55:53.679] [DEBUG ] [ 9660] [CACHE ] Cache quota manager started
[2022/09/14 12:55:53.832] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Trying 192.168.120.180…
[2022/09/14 12:55:53.832] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] TCP_NODELAY set
[2022/09/14 12:55:53.848] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Connected to 192.168.120.180 (192.168.120.180) port 22 (#0)
[2022/09/14 12:55:53.848] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Failure establishing ssh session: -5, Unable to exchange encryption keys
[2022/09/14 12:55:53.848] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Closing connection 0
[2022/09/14 12:55:53.864] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Hostname 192.168.120.180 was found in DNS cache
[2022/09/14 12:55:53.864] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Trying 192.168.120.180…
[2022/09/14 12:55:53.864] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] TCP_NODELAY set
[2022/09/14 12:55:53.864] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Connected to 192.168.120.180 (192.168.120.180) port 22 (#1)
[2022/09/14 12:55:53.864] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Failure establishing ssh session: -5, Unable to exchange encryption keys
[2022/09/14 12:55:53.864] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Closing connection 1
[2022/09/14 12:55:53.895] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Hostname 192.168.120.180 was found in DNS cache
[2022/09/14 12:55:53.895] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Trying 192.168.120.180…
[2022/09/14 12:55:53.895] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] TCP_NODELAY set
[2022/09/14 12:55:53.917] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Connected to 192.168.120.180 (192.168.120.180) port 22 (#2)
[2022/09/14 12:55:53.917] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Failure establishing ssh session: -5, Unable to exchange encryption keys
[2022/09/14 12:55:53.917] [MESSAGE ] [ 17256] [NETWORK ] [INFORMATION] Closing connection 2
[2022/09/14 12:55:53.933] [MESSAGE ] [ 17256] [CACHE ] Uninitialize cache…
[2022/09/14 12:55:53.995] [DEBUG ] [ 9660] [CACHE ] Cache quota manager stopped
[2022/09/14 12:55:53.995] [MESSAGE ] [ 17256] [CACHE ] Cache uninitialized