fatal: Authentication failed
This error matches known, documented patterns with reliable solutions.
Quick Fix (Most Common Solution)
- Update credentials in credential manager
- Generate new personal access token
Seeing "fatal: Authentication failed"? This error can be frustrating, but it's usually fixable. It typically affects your development workflow or system. Below you'll find clear, step-by-step solutions to resolve this issue.
What This Error Means
Your username, password, or token was not accepted.
Frequently documented in developer and vendor support forums.
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Common Causes
- Wrong password or token
- Token expired
- No access to repository
How to Fix
- Update credentials in credential manager
- Generate new personal access token
- Verify repository access permissions
Last reviewed: March 2026 How we review solutions
Optional follow-up
Some users ask whether saving fixes for recurring errors would be useful when the same issue appears again.
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Frequently Asked Questions
Why does my password fail?
GitHub and others now require tokens instead of passwords.
How do I set up token?
Generate PAT in settings, use as password or configure credential helper.
Related Resources
Also Known As
- Git error
- Version control error
- Git command failure
- Repository error
Common Search Variations
- "git push rejected fix"
- "git merge conflict how to resolve"
- "git error what to do"
- "git command failed"
- "fix git repository error"
- "git authentication failed solution"
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