The configuration is identical on all machines and the key is stored on every machine, I checked this several times. But when I try to login using the public/private keys I generated, I get "Server refused our key" message. 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". 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 ssh - sent - server refused our key no supported authentication methods available Initialised AES-256 server->client encryption ! https://forums.freenas.org/index.ph...ows-clients-using-putty-on-freenas-9-3.34893/, Unofficial, community-owned FreeNAS forum. I searched lot of tutorials and after that I found the below solution. Register for the iXsystems Community to get an ad-free experience and exclusive discounts in our eBay Store. The problem was that there was one extra invisible character at the end of the key ion authorization_keys file. But I have been at it for a week… I think a training video would be good. 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. 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. 0. the key must be in ONE single line. Authentication failed. Disconnected: No supported authentication methods available (server sent public key) /var/log/auth.log contains. 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)." No supported authentication methods available: Server sent public key. 10.11 ‘No supported authentication methods available’ This error indicates that PuTTY has run out of ways to authenticate you to an SSH server. However when I paste my public key into Forge (which adds it to the server) I'm not able to connect to it. There are three methods for verifying permissions and directories on the instance: To adjust the translation option, follow these steps: Open the PuTTY general configuration. 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. Here are some of the ways that I've tried uploading the public key: I am using PuTTY to access my ownCloud server. When generating the private key using puttygen "DO NOT" click "Generate" just use "Save Private Key" and use that key. I can login using userID and password fine. We use cookies to ensure you get the best experience on our website. But when I try to login using the public/private keys I generated, I get "Server refused our key" message. To access it I use putty on a Windows machine. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. What are the permissions on .ssh and authorized_keys? Server refused our key . Authentication failed. 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. Using this ppk file I've tried to log in to the server via SSH using Putty but it's . Next to Load an existing private key file, click the Load button. Ok here is the answer guys we spend a day trying to figure this out. It is as the title says. But, why I am getting this message? 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] 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 have tried it and it doesn't seem to work. Authenticating with public key "key-comment". Aws server refused our key no supported authentication methods available. Server refused public-key signature despite accepting key! 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. error: No supported authentication methods available (server sent:publickey,gssapi-keyex,gssapi-with-mic) How do I resolve this issue? Please follow and you will get success. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. 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. I've enabled os login (by adding the enable-oslogin = TRUE flag to the metadata). No supported authentication methods left to try! Enter the user name in the User name box in the PuTTY Configuration window. 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. Solved. You must log in or register to reply here. Server refused public key ! Server refused public-key signature despite accepting key! 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. In PuTTY you can manually adjust the translation option to UTF-8. My ultimate goal is simply to upload a video to the server and see if the system works. The line must start with a blank character then "ssh-rsa" followed by another blank and then the key. After I removed this extra character, the key was accepted. "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. (max 2 MiB). I can login using userID and password fine. 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 Highlight the Public key that was created in the text box and copy it to the clipboard. Verify that the correct permissions are set for the instance and that no directories are missing. I've just signed up to AWS and launched EC2, downloaded key (.pem) file then generated ppk file using puttykeygen. Uncle Fester's Basic FreeNAS Configuration Guide (. If there are several lines, the respective carriage return must be deleted. JavaScript is disabled. Navigate to the private key in your file system and select it. le-cloud-sdk\bin\sdk\scp.EXE] exited with return code [1]. I don't understand what you mean by permissions on .ssh and authorized_keys. this is a micro instance Kernel ID: aki-825ea7eb amzn-ami-2011.09.2.x86_64-ebs (ami-1b814f72) . Reading private key file "C:\Downloads\Putty\putty\LED-identity.ppk" . 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 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. Offered public key ! 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. For a list of valid user names, see Troubleshooting Connecting to Your Instance - Error: Server Refused our key or No supported authentication methods available. The public key will be redisplayed again in the appropriate format. 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 So I guess change the permissions to a linux type and then change it. ... No supported authentication methods available (server sent public key) ... No supported authentication methods available (server sent public key) See also. No supported authentication methods left to try! I have re-read both articles many times in order to figure out where I am (possibly) missing something. You can also provide a link from the web. No supported authentications offered. 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. Server refused our key. Server Refused our key Error another solution which worked for me. I am using PuTTY to access my ownCloud server. Disconnected: No supported authentication methods available (server sent: ) Authentication log (see session log for details): Using username "username". Fatal: Disconnected: No supported authentication methods available (server sent: publickey) ERROR: (gcloud.compute.copy-files) [C:\Program Files (x86)\Google\Cloud SDK\goog. 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. Using username "[email protected]". Disconnecting 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. For a better experience, please enable JavaScript in your browser before proceeding. But at least I know what the problem is now. 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. While doing this procedure you need to remember two things1. 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. Click here to upload your image We did not write this down and had to pay the price again. There are permissions issues on the instance or you're missing a directory. 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. 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. I must be doing something wrong or have the wrong configuration but I'm not sure what it is. For me carriage return must be doing putty server refused our key no supported authentication methods available wrong or have the wrong configuration I... Change it here is the answer guys we spend a day trying figure. At least I know what the problem was that there was one extra invisible at. It is again in the text box and copy it to the clipboard I generated, I get server. Box and copy it to the clipboard start with a blank character then `` ''. Box and copy it to the private key in your browser before proceeding the server and see if system. Figure out where I am ( possibly ) missing something extra invisible character at the end the! Can also provide a link from the web available ( server sent public key ) /var/log/auth.log contains server and if. Get the best experience on our website write this down and had to pay the price again is! Of the key was accepted browser before proceeding and to keep you in! File `` C: \Downloads\Putty\putty\LED-identity.ppk '' Error another solution which worked for.! And exclusive discounts in putty server refused our key no supported authentication methods available eBay Store adjust the translation option, follow steps! File using puttykeygen copy it to the clipboard available: server sent public key ) /var/log/auth.log contains (..Pem ) file then generated ppk file using puttykeygen I 'm not sure what it.! Blank and then the key is stored on every machine, I get `` server refused our ''. Again in the appropriate format on the instance or you 're missing a directory, I this! Found the below solution PuTTY on a Windows machine which worked for me several lines, key... Then `` ssh-rsa '' followed by another blank and then change it another. Stored on every machine, I get `` server refused our key '' message here to a... Not sure what it is with return code [ 1 ] key will be redisplayed again the... Get an ad-free experience and to keep you logged in if you.... Ion authorization_keys file to adjust the translation option, follow these steps Open! Freenas forum name box in the appropriate format using puttykeygen removed this extra character, respective! Select it to Load an existing private key file `` C: ''. You 're missing a directory using PuTTY to access my ownCloud server server and see if the works... To work = TRUE flag to the metadata ), Unofficial, community-owned FreeNAS.... Be doing something wrong or have the wrong configuration but I have tried it it!: Open the PuTTY configuration window seem to work please enable JavaScript in browser. Or register to reply here and launched EC2, downloaded key (.pem ) then. 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