What Should I Do If Error Message "Disconnected: No supported authentication methods available" Is Displayed When I Remotely Log In to a Linux ECS?

Symptom

When I attempted to remotely log in to a Linux ECS, the system displayed error message "Disconnected: No supported authentication methods available".

Figure 1 No supported authentication methods available

Possible Causes

A policy that denies password-authenticated logins is enabled on the SSH server.

Solution

1. Open the /etc/ssh/sshd_config file and check the following settings:

   vi /etc/ssh/sshd_config

2. Modify the following settings:

   Change PasswordAuthentication no to PasswordAuthentication yes.

   Alternatively, delete the comment tag (#) before PasswordAuthentication yes.

3. Restart SSH.
   • CentOS 6

     service sshd restart

   • CentOS 7

     systemctl restart sshd