How to Fix GitHub Error 401 (Unauthorized)

Quick Answer: GitHub 401 error indicates authentication failure. Verify your GitHub token, check credentials, ensure SSH keys are configured, and confirm your account has access to the repository.

What Causes This Error

Invalid or expired GitHub personal access token
Incorrect GitHub username or password
SSH key not configured or not added to GitHub account
Two-factor authentication not properly configured
GitHub account permissions insufficient for operation
Token scope does not include required permissions
IP address blocked by GitHub security policies

Step-by-Step Fixes

Fix 1: Verify GitHub Credentials

Check username and password,Verify account is active,Confirm email is verified,Check account status page,Test login on github.com

Fix 2: Generate New Personal Access Token

Go to GitHub Settings > Developer settings,Click Personal access tokens,Generate new token,Select required scopes,Copy and store token securely

Fix 3: Configure SSH Key

Generate SSH key pair,Add public key to GitHub account,Configure SSH config file,Test SSH connection,Use SSH URL for cloning

Fix 4: Enable Two-Factor Authentication

Go to GitHub Security settings,Enable 2FA if required,Generate recovery codes,Use app-specific password if needed,Update authentication method

Fix 5: Check Token Permissions

Review token scopes,Ensure repo access is granted,Check organization permissions,Verify team membership,Request access if needed