Authentication error when pushing to GitHub repository

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1

I’m having trouble pushing changes to my GitHub repo. Every time I try to push to the main branch, I get an authentication failure.

The error looks like this:

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

I’ve set up SSH keys and they seem to work fine. When I test with ssh -T [email protected] I get a success message saying I’m authenticated properly.

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

This shows my SSH connection is working (myuser is my GitHub username). I followed all the GitHub setup guides and tried solutions from various forums but still can’t push. Any ideas what might be causing this issue?

2

It appears that there is a mix-up between SSH and HTTPS protocols. Your successful authentication message indicates that your SSH setup is correct, but you are attempting to push using HTTPS, which requires different credentials. To resolve this, check your remote URLs with git remote -v—they will likely start with https://. You can either switch to SSH by running git remote set-url origin [email protected]:yourusername/yourrepo.git, replacing with your details, or ensure your HTTPS credentials are correctly configured.