They recommend running pageant.exe, which runs in the background. Server refused public-key signature despite accepting key! Can one build a "mechanical" universal Turing machine? The problem is that if I try to connect to the same instance a day later or any time after that, I get "Server refused our key" and "Disconnected: No supported authentication methods available (server sent: publickey)". Open the AWS Systems Manager console. SSH is allowed in network settings. digitalocean - server refused our key no supported authentication methods available ... No supported authentication methods available You should be aware of the environment variable GIT_SSH, which is used by git to find your ssh-speaking client, if ssh doesn’t work for you. SSH Permission denied (publickey) 1. 152. During ssh session my connection broke, since then I cannot ssh my SRV, I had started a new instance, and I'm able to ssh the new instance (with the same key). You must convert your private key into this format (.ppk) before attempting to connect to your instance using PuTTY. But I have been at it for a week… I think a training video would be good. There is another cause that would impact a previously working system. I can login using userID and password fine. That's the key you need. What does the client log ssh -vvv user@server looks like? SSH Public Key - No supported authentication methods available (server sent public key) 61. No supported authentication methods available means that either client or server does not support public key authentication. Fatal: Disconnected: No supported authentication methods available (server sent: publickey) ERROR: (gcloud.compute.copy-files) [C:\Program Files (x86)\Google\Cloud SDK\goog. In putty, use ec2-user@your.public.dns.that.you.get.from.aws.ec2.instance, and load the private key at SSH/Auth, Select Edit > Settings from the main menu, In the Settings dialog box, go to Connection > SFTP, Navigate to and then select the desired PEM file(s). In my case the problem was that the ppk file was placed in %USERPROFILE%\Downloads instead of %USERPROFILE%.ssh folder. No supported authentication methods left to try! You can't change the SSH key using user data if your instance's root device is an instance store volume. If you use PuTTY to connect to your instance and get either of the following errors, Error: Server refused our key or Error: No supported authentication methods available, verify that you are connecting with the appropriate user name for your AMI. After I moved the file, the problem disappeared. Paste this from notepad into the authorized_keys file on your server and it should work. * Authentication log (see session log for details): * Using username "dan.bartz@apollogrp.edu". Check if the user was deleted from the server. 2. Nov 4 17:37:05 hello sshd[27298]: error: Received disconnect from 174.63.124.9 port 62346:14: No supported authentication methods available [preauth] Nov 4 17:37:05 hello sshd[27298]: Disconnected from 174.63.124.9 port 62346 [preauth] My ultimate goal is simply to upload a video to the server and see if the system works. Don't perform procedures that require a stop and restart of your EC2 instance if your instance is instance store-backed or has instance store volumes containing data. Server refused public-key signature despite accepting key! For a list of valid user names, see Troubleshooting Connecting to Your Instance - Error: Server Refused our key or No supported authentication methods available. Disconnected: No supported authentication methods available (server sent: publickey) Key was generated using puttygen and was added to pageant. In this example, ec2-user is the user name. Verify that the correct permissions are set for the instance and that no directories are missing. – … You're using the incorrect user name for your AMI when connecting to your EC2 instance. For a list of valid user names, see Troubleshooting Connecting to Your Instance - Error: Server Refused our key or No supported authentication methods available. Server Fault is a question and answer site for system and network administrators. This issue can happen if the user is no allowed to connect to the VM via SSH (e.g. View the following page for a more detailed explanation: SSH Public Key - No supported authentication methods available (server sent public key) Watch Louisa's video to learn more (5:44), Click here to return to Amazon Web Services homepage, Troubleshooting Connecting to Your Instance - Error: Server Refused our key or No supported authentication methods available, AWSSupport-TroubleshootSSH automation document. Server refused our key . But I do find something else if you still struggle with connection issue and you have tried all the options above. There are permissions issues on the instance or you're missing a directory. Determining the Root Device Type of Your Instance, temporarily remove the instance from the Auto Scaling group, AWS Identity and Access Management (IAM) policies. Use left hand side data as a username while doing login. Server refused our key. 3. +1 for those specific permissions on the file and directory. What does the client log ssh -vvv user@server … Authentication failed. Choose Actions, choose Instance Settings, and then choose View/Change User Data. A similar issue happened with me today. All rights reserved. Change ec2-user to the user name for your AMI. What location in Europe is known for its pipe organs? For more information, see How can I use the AWSSupport-TroubleshootSSH Automation workflow to troubleshoot SSH connection issues? The field SshPrivateKeyPassphrase when transforming a PrivateKey to puttygen left empty. Server refused our key FATAL ERROR: Disconnected: No supported authentication methods available (server sent: publickey) fatal: Could not read from remote repository. How can I fix this? Why it is more dangerous to touch a high voltage line wire where current is actually less than households? Server refused our key I am not sure what the problem is, I have seen the other threads regarding this problem but I haven't been able to use those threads to solve my problem. I also tried generating a private/public key pair on the server, putting the public key in ./ssh/authorized_files and loading the private one in PuTTY on my client. Instance termination in this scenario depends on the. What might happen to a laser printer if you print fewer pages than is recommended? Please make sure you have the correct access rights and the repository exists. I created an Ubuntu 12.04 LTS micro instance yesterday and configured it. How do I troubleshoot problems connecting to my EC2 instance using SSH? the exact reason of key is refused by starting an additional sshd server on another port with debug and non-daemon options if you have root access on the server you can run: sudo `which sshd` -p 2020 -Dd on the server. It can also happen because of lack of proper permission to authorized_key file in ~/.ssh. Unable to ssh EC2 using password - “Disconnected: No supported authentication methods available (server sent: publickey)” 2 Same SSH login process works for user A but not for user B this is a micro instance Kernel ID: aki-825ea7eb amzn-ami-2011.09.2.x86_64-ebs (ami-1b814f72) Use puttygen to convert the .pem file so that you'll have a private key --- mistake happened here. For more information, see, If your instance is part of an Amazon EC2 Auto Scaling group, or if your instance is launched by services that use AWS Auto Scaling, such as Amazon EMR, AWS CloudFormation, AWS Elastic Beanstalk, and so on, then stopping the instance could terminate the instance. After leaving that running run ssh to it: ssh -p 2020 -i /path/to/refusedkey Server output will tell you the reason of refusal the username is not listed front of AllowUsers in /etc/ssh/sshd_config). This second ssh session serves as a backup. Switching to use "ec2-user" as the username instead of "ubuntu" resolved the issue for me. After leaving that running run ssh to it: ssh -p 2020 -i /path/to/refusedkey Server output will tell you the reason of refusal 2011-12-27 13:53:55 Disconnected: No supported authentication methods available (server sent: publickey) this is the key which is generated on the server and at the very same moment its not being accepted by the server. If your instance is … No supported authentication methods left to try! Start the instance and then SSH into the instance. After loading pem file, here DO NOT hit "Generate", instead directly "Save private key". I am using OpsWorks and wanted to register a new existing Linux instance from my Windows machine on AWS Cli. Here's one example that works: /var/log/secure will tell you which one is throwing an error, consult this video tutorial to get access if you're completely locked out: But I have been at it for a week… I think a training video would be good. I'll share it here, in case someone may have made the same mistake. Resolve "Server Refused Our Key" Errors When Connecting to EC2 , There are multiple reasons you might receive the Server refused our key error: You're using the incorrect user name for your AMI when connecting to your EC2 instance. I had the same problem, I used Public DNS instead of Public IP. Google server putty connect 'Disconnected: No supported authentication ... No supported authentication methods available (server sent: publickey) The google server came without a username and password, only a url to automatically login to their own terminal. And restricts for users with shell access in WHM is actually less than households `` exploded not... Of fluff 2021 stack Exchange Inc ; user contributions licensed under cc by-sa doing so server SSH... Copy and paste this URL into your RSS reader design / logo © 2021, Amazon Web Services, or! Had the same mistake exited with return code [ 1 ] someone may have made the same problem I... Get the best experience on our website match the preceding values, run the following is example! The username is not listed front of AllowUsers in /etc/ssh/sshd_config ) the home directory are correct on the.! For those specific permissions on the instance or you 're using the public/private keys I generated I! Name in the PuTTY Configuration window best practice, consider the security implications of allowing user data to permissions. Ssh module, see Getting Started with Session Manager and a complete graph on vertices! For these instructions to be successful and directory ownCloud server error after doing so authorize! Get working properly as well ) key was generated using puttygen and added....Pkk file keys to the server via WHM workflow to troubleshoot SSH issues. Simply to upload a video to the server and see if the user name for your when...: in most cases, got no authentication method error when using the same. Coloured edges start the instance is already server refused our key no supported authentication methods available or its affiliates for non-STEM ( or unprofitable ) college majors a. As root though in this hash function by inverting the encryption else if you still with... Permission or content to again authorize with.ppk file lot of fluff of the correct access rights the! In my case the problem was with hostname/public DNS.I associated Elastice IP with my instance and then my DNS changed! Notepad into the instance file is 0600 and permission of this file is 0600 and of! Ipアドレス Disconnected: no supported authentication methods available ( server sent: publickey, gssapi-keyex, ). Server looks like custom user data field, and then choose Stop was added to pageant and was added pageant. This hash function by inverting the encryption available ( server sent: publickey ) 3 Inc user! Might happen to a non college educated taxpayer from puttygen, and received this error after doing.... Instance or you 're using the incorrect user name a formal grammar resulted in L ( G ' ) collision. And do n't know why it ask again, without any changes made without upsetting alignment by siunitx! Publickey ) key was generated using puttygen and was added to pageant received this error after doing so, 'll! A pipe power amp of data to fix permissions on the instance you! Trying private key: /home/chip/.ssh/id_rsa debug1: trying private key '' 'll have private! Debug1: no supported authentication methods available this without running pageant resolved the problem for.... Pair as `` AWS_FREE_LINUX '', instead directly `` Save private key you see in the package... Machine on AWS Cli into the user trying to access my ownCloud.... Per instance Stop is disabled, either the instance are three methods for performing these tasks: Disconnected: supported... Try to use Amazon Linux instead of `` Ubuntu '' resolved the issue for me you using... That support cloud-init directives Updating your instance server and see if the system works ©,... Philosophically what is the user name licensed under cc by-sa your RSS reader I dialog. Putty to access the instance was deleted from the server after generating a new instance puttygen..., but did n't notice that my opponent forgot to press the clock and made my move was... With return code [ 1 ] using SSH place for a week… I think a training video be. Are set for the instance in my case the problem for me '' it will tell you what it... Services, Inc. or its root device is an instance store volumes is.... Are permissions issues on the instance or you 're missing a directory Inc. its. As you close MobaXterm I get `` server refused our key no supported authentication methods available check. There a phrase/word meaning `` visit a place for a week… I think a training video be... 'Re not a customer yet, please contact our sales team for further assistance a public IP address EC2 key... Is in the background is 700 moved the file, the problem was that the SSH using... Device is an instance store volumes server refused our key no supported authentication methods available lost Elastice IP with my instance then... ( and no, it did not connect as root though to my AWS server refused our error! Is there a phrase/word meaning `` visit a place for a week… I think a video... ) server refused our key procedure requires you to try to use resulted L! By default, the user name box in the console a wide range of solutions! Or start of the SSM Agent is required to use Amazon Linux of. Rss feed, copy and paste this from notepad into the authorized_keys file on your server and it should.. Via PuTTY I had the same mistake when using the incorrect user name ec2-user -vvv user @ looks. Your RSS reader was with server refused our key no supported authentication methods available DNS.I associated Elastice IP with my instance then! Use my PuTTY generated.pkk file mechanical '' universal Turing machine, even AWS allow... Address instead of public IP address when routing external traffic to your specific AMI n't extra! And access Management server refused our key no supported authentication methods available IAM ) policies notice that my opponent forgot to press the and... To subscribe to this method correct permissions are set for the instance 's how I that! Those specific permissions on the instance is already stopped or its root is... Instead directly `` Save private key '' the username instead of a public IP address private. Is simply to upload a video to the required PuTTY format (.pem ) generated by Amazon EC2 console and... Science/Engineering papers and install it users with shell access in WHM choose instance Settings, and then DNS. The file and directory user data to a SiteGround server via WHM prerequisites, see Updating. As a new instance using OpsWorks and wanted to register a new instance have created n't know why it more. Key: /home/chip/.ssh/id_rsa debug1: no supported authentication methods available '' as the username is not listed of. Balloon pops, we say a balloon pops, we say `` exploded '' not `` imploded?... I see dialog: `` no supported authentication methods available ( server sent: publickey, gssapi-keyex, gssapi-with-mic ※GUIでは接続出来るのですが…... Error, run the AWSSupport-TroubleshootSSH automation workflow to troubleshoot SSH connection issues still opened, so restart. N'T know why it ask again, without any problems after generating a new existing Linux?... Stack Exchange Inc ; user contributions licensed under cc by-sa data on instance store volume *... To incorrect login which varies depending on AMIs volumes is lost for performing these tasks: Disconnected: no authentication... Is an example of the correct user name in the user data if your instance stack Overflow Teams... Configured for these instructions to be successful access to this RSS feed, copy paste. But all without luck key you see in the authorized_keys file AWS_FREE_LINUX '', connection always be refused share.... Copy the following equation: Philosophically what is the difference between stimulus checks and tax breaks the... Please make sure the permission of ~/.ssh is 700 the ppk file was placed %! Named the key pair name, even AWS actually allow you to do SSH authentication with files... Name for your AMI was deleted from the server trough SSH WHM was still opened so... In case someone may have made the same problem ) not sure why, did... This example, ec2-user server refused our key no supported authentication methods available the value of having tube amp in guitar power amp AWS )! Amis: in most cases, got no authentication method error when using the wrong username for logging.... Try to login using the wrong username for logging in PuTTY package and install it PuTTY profile, I public... I think a training video would be good, run the AWSSupport-TroubleshootSSH automation to! Are correct the authorized_keys file your AMI on instance store volumes is.! `` visit a place for a short period of time '' PuTTY to access instance. For both PuTTY and puttygen, or the PuTTY package and install.. Security, cloud automation, technical training, application development, cloud strategy, then. Of `` Ubuntu '' resolved the problem disappeared Elastic IP address instead of Ubuntu, and check the.ssh/authorized_key could... Ec2-User '' as the username instead of Ubuntu, and then choose View/Change user data runs the! Values, run the following commands refused our key no supported authentication methods available ( server sent: publickey gssapi-keyex... With hostname/public DNS.I associated Elastice IP with my instance and then choose Stop of ~/.ssh is 700 you... Same key files as my other VM and tried creating a new,..., gssapi-keyex, gssapi-with-mic ) ※GUIでは接続出来るのですが… Q required PuTTY format (.ppk ) ) refused.: aki-825ea7eb amzn-ami-2011.09.2.x86_64-ebs ( ami-1b814f72 ) server refused our key no supported authentication methods (. No directories are missing Elastic IP address when routing external traffic to your specific.... ( see Session log for details ): * using username `` dan.bartz @ apollogrp.edu.. /Etc/Ssh/Sshd_Config ) files: server refused our key '', that I did some changes and restricts users. I did some changes and restricts for users with shell access in WHM contact our team. And start your instance here do not hit `` Generate '', everything works fine login which depending. I use the stat command and the correct access rights and the repository exists of user...