git authentication failed - Git authentication failed remote repository

root@linuxfix:~/git_authentication_failed$

git authentication failed

Git authentication failed remote repository

Solutions

Prerequisites: Start by updating your system to resolve common issues and ensure the solutions provided below are compatible with your current environment.

check_latest_version && sudo apt update && sudo apt upgrade -y

Update credentials

Fix authentication:

git config --global user.name "username"

git config --global user.email "email"

git remote set-url origin https://token@github.com/user/repo.git

Setup SSH keys

Configure SSH authentication:

ssh-keygen -t rsa -b 4096

ssh-add ~/.ssh/id_rsa

cat ~/.ssh/id_rsa.pub

Use personal access token

Generate and use token:

git clone https://token@github.com/user/repo.git

git remote set-url origin https://token@github.com/user/repo.git

What is git authentication failed?

Git cannot authenticate with remote repository due to credential issues.

Common scenarios: Wrong credentials, expired tokens, SSH key problems, or two-factor authentication.

Common Causes

Wrong username/password
Expired access token
SSH key not configured
2FA required
Repository permissions

Debugging Tips

git config --list

ssh -T git@github.com

git remote get-url origin

Prevention

Use SSH keys
Store tokens securely
Regular credential updates

Additional Resources

GitHub SSH Guide

Setting up SSH for GitHub

git authentication credentials ssh