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Troubleshooting "Disconnected: No supported authentication methods available (server sent: publickey)" (Doc ID 2204841.1)

Last updated on JANUARY 25, 2018

Applies to:

Oracle Compute Cloud Service - Version N/A to N/A
Java Cloud Service - Version N/A and later
Oracle Database as a Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

When trying to connect to an Oracle Cloud Linux/UNIX-Like Instance through Open SSH, the SSH client returns one of the following errors:
"Disconnected: No supported authentication methods available (server sent: publickey)"
"Disconnected: No supported authentication methods available (server sent: publickey, gssapi-with-mic)"

Please note the following best practice: before you make any changes to the SSH config, start a second SSH session and ensure that it remains connected while you edit the settings. This second ssh session serves as a backup. If SSH access got lost without a backup session available, one can repair the SSH setting by following the procedure: Repairing Configuration or Restoring Access to the Linux PaaS or IaaS Underlying VM (Doc ID 2085512.1)

Cause

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In this Document
Symptoms
Cause
Solution
References

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