can't connect using SSH key

[the-Arioch]

I was given a key file.... -----BEGIN RSA PRIVATE KEY----- and so forth, EOL is lone 0x0A not 0x0D 0x0A pair

Erroneously admins gave me a private key for root instead of creating a limited user as asked.
I am not sure it would make any difference.

The key has no passphrase.

I use the key to connect ssh session using MobaXTerm - and it works.

I can convert the file to PuTTY's .ppk format, but then yasfw fails to loaf it (MobaXTerm would use both formats).

yasfw -r -c --server <ip number> --user root --mount-point W: -C /vz/private..... --key d:\path\XXXXXXXX__root__id_rsa.key 

i run it and i get

Oct 29 20:31:06.231 INFO initializing, dokan_driver_version: 400, dokan_version:
 150
Oct 29 20:31:06.356 INFO connection established, server_public_key: CF:23:20:36:
----skip-----
:A0
Passphrase for private key: for "d:\path\XXXXXXXX__root__id_rsa.key":

i just press Enter for i have no passphrase there

Then one more line is output, and then yasfw appears to freeze - do nothing, says nothing

Password: Oct 29 20:31:56.495 INFO all keys are refused by server

Well, it is not ACTUALLY frozen, it jsut pretends to - becuase output lines order is broken above.

I press Enter again and then yasfw exits outputting a farewell

server_auth_methods: PASSWORD | PUBLICKEY | GSSAPI_MIC
 Oct 29 20:33:16.808 ERRO error occurred during authentication, error: SshError
{ error_type: Fatal, error_msg: "Socket error: disconnected", sftp_error_code: N
one }

It seems to me there are two problems.

1. yasfw fails to accept the key.
2. yasfw asks foir a passphrase where there is none at all
3. yasfw outputs messages in wrong order, it should be like that instead:

INFO connection established, server_public_key: CF:23:20:36:
INFO Private key provided  "d:\path\XXXXXXXX__root__id_rsa.key", does not need a passphrase.
INFO all keys are refused by server
INFO server_auth_methods: PASSWORD | PUBLICKEY | GSSAPI_MIC
Password: _

[the-Arioch]

USing MobaXTerm i converted private key to public key

---- BEGIN SSH2 PUBLIC KEY ----
Comment: "Imported-Openssh-Key: D:\\path\\XXXXXXXX__root__id_rsa.key"
AAAAB3.....................skip

But yasfw refuses to use it, says it fails to open the key file, just like with .ppk files

MobaXTerm still works ok