GitHub: invalid username or password

Question

I have a project hosted on GitHub. I fail when trying to push my modifications on the master. I always get the following error message

Password for 'https://[email protected]':  remote: Invalid username or password. fatal: Authentication failed for 'https://[email protected]/eurydyce/MDANSE.git/' 

However, setting my ssh key to github seems ok. Indeed, when I do a ssh -T [email protected] I get

Hi eurydyce! You've successfully authenticated, but GitHub does not provide shell access. 

Which seems to indicate that everything is OK from that side (eurydyce being my github username). I strictly followed the instructions given on github and the recommendations of many stack discussion but no way. Would you have any idea of what I may have done wrong?

Answer 1

After enabling Two Factor Authentication (2FA), you may see something like this when attempting to use git clone, git fetch, git pull or git push:

$ git push origin master Username for 'https://github.com': your_user_name Password for 'https://[email protected]':  remote: Invalid username or password. fatal: Authentication failed for 'https://github.com/your_user_name/repo_name.git/' 

Why this is happening

From the GitHub Help documentation:

After 2FA is enabled you will need to enter a personal access token instead of a 2FA code and your GitHub password.

...

For example, when you access a repository using Git on the command line using commands like git clone, git fetch, git pull or git push with HTTPS URLs, you must provide your GitHub username and your personal access token when prompted for a username and password. The command line prompt won't specify that you should enter your personal access token when it asks for your password.

How to fix it

1. Generate a Personal Access Token. (Detailed guide on Creating a personal access token for the command line.)
2. Copy the Personal Access Token.
3. Re-attempt the command you were trying and use Personal Access Token in the place of your password.

Related question: https://stackoverflow.com/a/21374369/101662

Answer 2

https://[email protected]/eurydyce/MDANSE.git is not an ssh url, it is an https one (which would require your GitHub account name, instead of 'git').

Try to use ssh://[email protected]:eurydyce/MDANSE.git or just [email protected]:eurydyce/MDANSE.git

git remote set-url origin [email protected]:eurydyce/MDANSE.git 

The OP Pellegrini Eric adds:

That's what I did in my ~/.gitconfig file that contains currently the following entries [remote "origin"] [email protected]:eurydyce/MDANSE.git

This should not be in your global config (the one in ~/).
You could check git config -l in your repo: that url should be declared in the local config: <yourrepo>/.git/config.

So make sure you are in the repo path when doing the git remote set-url command.

---

As noted in Oliver's answer, an HTTPS URL would not use username/password if two-factor authentication (2FA) is activated.

In that case, the password should be a PAT (personal access token) as seen in "Using a token on the command line".

That applies only for HTTPS URLS, SSH is not affected by this limitation.