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