I'm using Git for Windows and have configured the git client to use a custom ssh command via
core.sshCommand to look for the ssh binary that has been installed as part of Windows 10's 1809's Optional Feature this has been working well but recently when I'm trying to use git against Github as a remote repo (Bitbucket worked fine) it has been giving me warning messages
warning: agent returned different signature type ssh-rsa (expected rsa-sha2-512)
After performing the obligatory google search, I stumbled across several threads but still couldn't find a solution. This annoyed me enough to look for other alternatives and discovered a Windows port of OpenSSH Portable. So since I didn't want (probably not even possible) to have both binaries (and ssh-agents) running side by side. I decided it would be best that I remove Window's 1809's installed version first then install OpenSSH Portable
Uninstall Windows' OpenSSH
This basically removes the binaries installed in
Remove-WindowsCapability -Online -Name "OpenSSH.Client~~~~0.0.1.0" Remove-WindowsCapability -Online -Name "OpenSSH.Server~~~~0.0.1.0"
Stop and delete the existing Windows Service
Get-Service ssh-agent | Stop-Service sc.exe delete ssh-agent
Install OpenSSH Portable
I'm using Chocolatey's openssh package but you can download and install the binaries yourself here. This installs the binaries into
C:\Program Files\OpenSSH-Win64 . The
/SSHAgentFeature flag ensures that the SSH Agent Service gets installed too.
choco install openssh --package-parameters="/SSHAgentFeature"
18.104.22.168 was the last good working version for me.
22.214.171.124 was complaining about my ssh key being in an invalid format.
Check that you have the binaries installed
Get-Command ssh*exe CommandType Name Version Source ----------- ---- ------- ------ Application ssh.exe 126.96.36.199 C:\Program Files\OpenSSH-Win64\ssh.exe Application ssh-add.exe 188.8.131.52 C:\Program Files\OpenSSH-Win64\ssh-add.exe Application ssh-agent.exe 184.108.40.206 C:\Program Files\OpenSSH-Win64\ssh-agent.exe Application sshd.exe 220.127.116.11 C:\Program Files\OpenSSH-Win64\sshd.exe Application ssh-keygen.exe 18.104.22.168 C:\Program Files\OpenSSH-Win64\ssh-keygen.exe Application ssh-keyscan.exe 22.214.171.124 C:\Program Files\OpenSSH-Win64\ssh-keyscan.exe Application ssh-shellhost.exe 126.96.36.199 C:\Program Files\OpenSSH-Win64\ssh-shellhost.exe
Check that you have the
Get-Service ssh-agent Status Name DisplayName ------ ---- ----------- Running ssh-agent ssh-agent
Configure our git client to use our newly installed binaries for ssh
git config --global core.sshCommand "'C:\Program Files\OpenSSH-Win64\ssh.exe'"
Ensure that it has been configured properly
Get-Content $env:USERPROFILE\.gitconfig | Select-String sshCommand -Context 6 [core] excludesfile = ~/.gitignore_global sshCommand = 'C:\\Program Files\\OpenSSH-Win64\\ssh.exe'
I wanted to remove any existing identities (but this could be optional)
Add new identites
Then we should be good to go ;)