Eclipse: Failed to connect sshd on "hostname" Auth Fail

Question

I have the following issue when I try to start an ssh interface (shell) to a Unix host using Eclipse (Remote System Explorer)

I think that there is an issue related to the (Generate RSA Key: Preferences/Network Connection/SSH2). I tried the below:

a) I've regenerated a new key, saved under:

C:\Users\<myUser>\Eclipse\ssh 

Also I have checked the Authentication Methods tab:

1.gssapi-with-mic 2. publickey 3. password 4. keyboard-interactive

b) I transferred the public key (again)

c) Configure proxy settings again (Proxy bypass)

d) I added the connections again.

I was using the interface last year on the same computer/ server.

Thanks in advance