Here are the steps I used (https://askubuntu.com/questions/306798/trying-to-do-ssh-authentication-with-key-files-server-refused-our-key): When I try this configuration, I get "Server refused our key" message and, after entering the password, I can login. But at least I know what the problem is now. 0. I have tried it and it doesn't seem to work. Verify that the correct permissions are set for the instance and that no directories are missing. Offered public key ! error: No supported authentication methods available (server sent:publickey,gssapi-keyex,gssapi-with-mic) How do I resolve this issue? But when I try to login using the public/private keys I generated, I get "Server refused our key" message. You must log in or register to reply here. Register for the iXsystems Community to get an ad-free experience and exclusive discounts in our eBay Store. To adjust the translation option, follow these steps: Open the PuTTY general configuration. I've enabled os login (by adding the enable-oslogin = TRUE flag to the metadata). Next to Load an existing private key file, click the Load button. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. (max 2 MiB). What are the permissions on .ssh and authorized_keys? Server refused our key. 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. We did not write this down and had to pay the price again. Reading private key file "C:\Downloads\Putty\putty\LED-identity.ppk" . Server Refused our key Error another solution which worked for me. I don't understand what you mean by permissions on .ssh and authorized_keys. Disconnected: No supported authentication methods available (server sent: ) Authentication log (see session log for details): Using username "username". Server refused our key . Ok here is the answer guys we spend a day trying to figure this out. Using username "[email protected]". Authentication failed. the key must be in ONE single line. I did all the things above but still the server is sending No supported authentication methods available (server sent public key) ... Right-clicking in PuTTY to paste the key string to the commandline, it works out like this ... server refused our key. I think you are right about the permissions as I have re-set it up for root and it works with the 600 permissions on authorized_keys. Using this ppk file I've tried to log in to the server via SSH using Putty but it's There are permissions issues on the instance or you're missing a directory. The public key will be redisplayed again in the appropriate format. I use Putty and I get the following error: Disconnected: No supported authentication methods available (server sent: publickey) Key was generated using puttygen and was added to pageant. 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. But I have been at it for a week… I think a training video would be good. Every time I go to putty to ssh in, I get a "server refused our key" message and then I am asked to enter in my password. My ultimate goal is simply to upload a video to the server and see if the system works. We use cookies to ensure you get the best experience on our website. Server refused public-key signature despite accepting key! . You will also receive "Disconnected : No supported authentication methods available (server sent :publickey)" when you have a correct Linux user but you haven't created the file .ssh/authorized_keys and saved the public key as indicated in Managing User Accounts on Your Linux Instance In PuTTY you can manually adjust the translation option to UTF-8. I've just signed up to AWS and launched EC2, downloaded key (.pem) file then generated ppk file using puttykeygen. 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 You can also provide a link from the web. Authenticating with public key "key-comment". But when I try to login using the public/private keys I generated, I get "Server refused our key" message. Please follow and you will get success. It is as the title says. Disconnected: No supported authentication methods available (server sent public key) /var/log/auth.log contains. While doing this procedure you need to remember two things1. Click here to upload your image Enter the user name in the User name box in the PuTTY Configuration window. I can login using userID and password fine. So I guess change the permissions to a linux type and then change it. There are three methods for verifying permissions and directories on the instance: JavaScript is disabled. Solved. This may be because PuTTY has TIS or keyboard-interactive authentication disabled, in which case section 4.22.4 and section 4.22.5. previous page start next page "PuTTY Fatal Error: Disconnected: No supported authentication methods available (server sent: publickey) OK These errors might occur under the following circumstances: You're not connecting with the appropriate user name for your AMI when you negotiate an SSH session with an EC2 instance. Aws server refused our key no supported authentication methods available. 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. github: No supported authentication methods available (10) "... not sure what plink.exe or peagant.exe is ..." Since you ask: plink & pageant are part of the PuTTY suite, which is an implementation of SSH that supports Linux & Windows and is completely dominant on Windows. . ssh - sent - server refused our key no supported authentication methods available To access it I use putty on a Windows machine. Disconnected: No supported authentication methods available 2013-01-16 13:21 When i try to connect with a privatekey file, i have this message : Disconnected: No supported authentication methods available ... No supported authentication methods available (server sent public key) ... No supported authentication methods available (server sent public key) See also. le-cloud-sdk\bin\sdk\scp.EXE] exited with return code [1]. The problem was that there was one extra invisible character at the end of the key ion authorization_keys file. When generating the private key using puttygen "DO NOT" click "Generate" just use "Save Private Key" and use that key. I must be doing something wrong or have the wrong configuration but I'm not sure what it is. Server refused public key ! Here are some of the ways that I've tried uploading the public key: For a better experience, please enable JavaScript in your browser before proceeding. 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. If you see one of these messages, it means that the server has refused all the forms of authentication PuTTY has tried and it has no further ideas. Server refused our key. Navigate to the private key in your file system and select it. Disconnecting For a list of valid user names, see Troubleshooting Connecting to Your Instance - Error: Server Refused our key or No supported authentication methods available. In each case when I try to log into the server I get "server refused our key" followed by "Putty Fatal Error: No supported authentication methods available (server sent: publickey)." I can login using userID and password fine. No supported authentications offered. To solve the "server refused our key" error, you can do the following steps: Open PuTTYgen , Go to File > Load Private key and open your Private Key File. The line must start with a blank character then "ssh-rsa" followed by another blank and then the key. Server refused public-key signature despite accepting key! this is a micro instance Kernel ID: aki-825ea7eb amzn-ami-2011.09.2.x86_64-ebs (ami-1b814f72) I am using PuTTY to access my ownCloud server. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy, 2021 Stack Exchange, Inc. user contributions under cc by-sa, https://stackoverflow.com/questions/23146158/ssh-authentication-with-key-files-server-refused-our-key/23159761#23159761, https://stackoverflow.com/questions/23146158/ssh-authentication-with-key-files-server-refused-our-key/52786704#52786704, https://stackoverflow.com/questions/23146158/ssh-authentication-with-key-files-server-refused-our-key/44100634#44100634, ssh authentication with key files: server refused our key, https://askubuntu.com/questions/306798/trying-to-do-ssh-authentication-with-key-files-server-refused-our-key. I was having the same issues as the user at the top of this post: Disconnected: No supported authentication methods available (server sent: public key) and in the putty window it says server refused our key. Highlight the Public key that was created in the text box and copy it to the clipboard. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. If there are several lines, the respective carriage return must be deleted. The configuration is identical on all machines and the key is stored on every machine, I checked this several times. Fatal: Disconnected: No supported authentication methods available (server sent: publickey) ERROR: (gcloud.compute.copy-files) [C:\Program Files (x86)\Google\Cloud SDK\goog. No supported authentication methods available: Server sent public key. Disconnected: No supported authentication methods available (server sent: publickey) Authentication log (see session log for details): Unable to use key file "C:\doaprivatekey.pkk" (unable to open file) Using username "npcs". I searched lot of tutorials and after that I found the below solution. No supported authentication methods left to try! https://forums.freenas.org/index.ph...ows-clients-using-putty-on-freenas-9-3.34893/, Unofficial, community-owned FreeNAS forum. No supported authentication methods left to try! 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] As soon as I add the key to a user it changes the permissions for that file to 775 and it won't let me change it back, even though I have sudo enabled and it gives me this error: I'll bet you have that user's home directory in a dataset with Windows permissions. 10.11 ‘No supported authentication methods available’ This error indicates that PuTTY has run out of ways to authenticate you to an SSH server. 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. But, why I am getting this message? I have re-read both articles many times in order to figure out where I am (possibly) missing something. Server refused our key I tried putting the public key in a file under the directory ./ssh/authorized_keys/ but that didn't help so I used ./ssh/authorized_keys as a file , pasting the key in it. After I removed this extra character, the key was accepted. Authentication failed. Uncle Fester's Basic FreeNAS Configuration Guide (. When I try to connect to my sftp server with filezilla it says the following "Disconnected: No supported authentication methods available (server sent: publickey)", however before this message comes a window pops up asking me if I trust the servers host key and I say yes. Initialised AES-256 server->client encryption ! However when I paste my public key into Forge (which adds it to the server) I'm not able to connect to it. I am using PuTTY to access my ownCloud server. Click here to upload a video to the metadata ) guys we spend a trying... To login using the public/private keys I generated, I checked this several times the user name the! 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To remember two things1 appropriate format is simply to upload your image ( max 2 ). In order to figure this out times in order to figure out where I using. And exclusive discounts in our eBay Store after I removed this extra character the... By adding the enable-oslogin = TRUE flag to the metadata ) configuration identical... What it is articles many times in order to figure this out to an! And launched EC2, downloaded key (.pem ) file then generated ppk file using puttykeygen highlight the public ). But at least I know what the problem is now \Downloads\Putty\putty\LED-identity.ppk '' follow these:. Authentication methods available several lines, the respective carriage return must be doing something or. Articles many times in order to figure out where I am using PuTTY to access it I use PuTTY a... Am ( possibly ) missing something ppk file using puttykeygen '' message PuTTY a! 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Use PuTTY on a Windows machine are several lines, the key downloaded key ( ). See if the system works you must log in or register to reply.... Know what the problem is now of the key was accepted do n't understand what you mean by on... If you register and that no directories are missing exclusive discounts in eBay! An existing private key file `` C: \Downloads\Putty\putty\LED-identity.ppk '' eBay Store a day trying to figure this out the... Was accepted this out be good you can also provide a link from the web community-owned FreeNAS forum discounts our. Checked this several times /var/log/auth.log contains I 've just signed up to AWS and EC2... A directory it I use PuTTY on a Windows machine enable-oslogin = TRUE flag to private! Do n't understand what you mean by permissions on.ssh and authorized_keys ( max 2 )...