Git: Public key authentication failed

I added in the ~/.ssh/config:

Host ssh.dev.azure.com
  IdentityFile ~/.ssh/[you private key file]

My case was more tricky. VisualStudio.com banned my old ssh key and didn't bother to somehow notify me. Experimentally I figured out that I just need to add a new key and use it instead.

ssh-keygen -f ~/.ssh/new_key

In ~/.ssh/config:

Host vs-ssh.visualstudio.com
  IdentityFile ~/.ssh/new_key

That worked. Then fun thing was that they don't let you remove the old banned key from SSH Keys page.

Update: With OpenSSH 8.9p1 that makes ssh-rsa keys by default, you may need to enable ssh-rsa in ssh_config or ~/.ssh/config.

    PubkeyAcceptedAlgorithms +ssh-rsa
    HostkeyAlgorithms +ssh-rsa

See https://stackoverflow.com/a/72102410/4653540

Fixed it by creating ~/.ssh/config and added:

Host xxx.visualstudio.com
  IdentityFile ~/.ssh/key

Make sure to do chmod 0400 ~/.ssh/config

Tags:

Git

Azure Devops

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