Authentication Failure on Github even after adding SSH key

Question

I get fatal:Authenication Failure when I try to push code to my repo. I've added the public key on my github account as well. When I do : `ssh -i git@github.com` I get `Hi amangupta052! You've successfully authenticated, but GitHub does not provide shell access.` Can anyone help? Thanks

Accepted Answer

That depends on the remote url you have used.

If `git remote -v` returns:

```
https://github.com/username/reponame
```

Then your ssh setup won't matter. But this would work:

```
ssh://git@github.com:username/reponame
```

Another cause is linked to your private key: if it is pass-phrase protected, with a special character in it, that usually don't work well. See here for other ssh causes of failure.

To replace your remote named `origin`, use `git remote` commands:

```
git remote set-url origin ssh://git@github.com:username/reponame
```

(as explained in the GitHub help page about changing the rmeote url)

If you see::

```
ssh: Could not resolve hostname github.com:amangupta052: 
     Name or service not known 
fatal: The remote end hung up unexpectedly
```

Try the non-scp ssh syntax:

```
git remote set-url origin ssh://git@github.com/username/reponame
```

(note the '`/`' instead of the '`:`' after `github.com`)

Maybe this would have worked, as commented in this blog post:

```
git remote set-url origin git@github.com:username/reponame
```

(scp-like syntax, but without the `ssh://` prefix)

As I mention here, an scp syntax usually means an `~/.ssh/config` file to work properly.

Authentication Failure on Github even after adding SSH key

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