Recently, I ran into this error: unable to access 'https://github.com/thomas/example.git/': The requested URL returned error: 403 while trying to push a new branch to a GitHub repository. Here’s a quick rundown of the problem and how I fixed it, in case it helps you too!
I created a new branch (thomas-test) and tried to push it to the remote repository with:
git push --set-upstream origin thomas-test
But I got this error:
remote: Permission to thomas/example.git denied to thomast1906.
fatal: unable to access 'https://github.com/thomas/example.git/': The requested URL returned error: 403
Even though I could create pull requests in the GitHub browser, my local push was blocked.
Diagnosing the issue
The 403 error means I didn’t have permission to push to the repository from my local machine. This usually happens when:
- You’re pushing to the main repository instead of your own fork
- You’re trying to push directly to a repository you don’t have write access to
- Your local Git credentials are outdated or misconfigured
How I Fixed it
1. Checked my remote URL:
It showed:
origin https://github.com/thomas/example.git (fetch)
origin https://github.com/thomas/example.git (push)
This meant I was trying to push directly to the main repo, not my fork.
2. Updated authentication with GitHub CLI:
I ran:
and followed the prompts to re-authenticate Git with my GitHub credentials. This made sure my local Git was using a valid token and the correct account.
The Result
After refreshing my authentication, I was able to push my branch without any errors. If you’re still blocked, make sure:
- You’re pushing to a repo you have access to
- Your credentials are up to date
- You’re using a Personal Access Token (PAT) if required
Tip: If you have multiple GitHub accounts, check your credential manager and clear out any old or conflicting credentials
In summary:
A 403 error when pushing to GitHub is almost always a permissions or authentication issue. Double-check your remote, refresh your credentials, and push to your fork if you don’t have write access to the main repo. Problem solved!
