From cygwin openssh 8.8, ssh-rsa is deprecated, so command central(CC 10.7 fix 6) is not supported for openssh 8.8.
As a work around, configure the ssh server for the deprecated ssh-rsa,ssh-dss algorithms.
Add below lines in /etc/sshd_config in cygwin install directory and restart ssh service.
HostKeyAlgorithms +ssh-rsa,ssh-dss
PubkeyAcceptedKeyTypes +ssh-rsa,ssh-dss
Thanks,
Gowri Prasad