How do I fix: Generating and Adding a New SSH Key?

Step 1: Open a terminal window and run the command $ ssh-keygen -t rsa -b 4096. This will generate a new SSH key.Step 2: Copy the public key generated by the command above and add it to your GitHub repository settings.Step 3: Go to your GitHub repository settings, click on 'SSH and GPG keys' in the

Coding⏱️ 3 min read📅 2026-06-15

How to Fix: git gh-pages deployment permissions error “Permission denied (publickey). fatal: Could not read from remote repository”

Q: Best Solutions to Fix It Adding the SSH Key to the SSH Agent?

Step 1: Open a new terminal window and run the command $ ssh-add ~/.ssh/id_rsa. This will add your SSH key to the SSH agent, allowing Git to authenticate with GitHub.Step 2: If you are using a different SSH key file, replace ~/.ssh/id_rsa with the path to your actual SSH key file.Step 3: After addin

Git gh-pages deployment permissions error “Permission denied (publickey). fatal: Could not read from remote repository”

Quick Answer: Try running the command $ ssh-add ~/.ssh/id_rsa to resolve the issue.

📋 Table of Contents

💡 Why You Are Getting This Error
✅ Best Solutions to Fix It
💡 Conclusion

This error occurs when the Git repository on GitHub is unable to authenticate your SSH key, preventing it from deploying your application to gh-pages. As a new user to Git and gh-pages deployment, this issue can be frustrating but can be resolved by following these steps.

By understanding the root cause of the problem, you can troubleshoot and fix the issue efficiently.

💡 Why You Are Getting This Error

The primary reason for this error is that your SSH key is not properly configured or added to the SSH agent. This prevents Git from authenticating with GitHub, which is necessary for deployment to gh-pages.
An alternative reason could be that your SSH key is corrupted or not properly formatted.

✅ Best Solutions to Fix It

Adding the SSH Key to the SSH Agent

Step 1: Open a new terminal window and run the command $ ssh-add ~/.ssh/id_rsa. This will add your SSH key to the SSH agent, allowing Git to authenticate with GitHub.
Step 2: If you are using a different SSH key file, replace ~/.ssh/id_rsa with the path to your actual SSH key file.
Step 3: After adding the SSH key, try running $ yarn run deploy again to see if the issue is resolved.

Generating and Adding a New SSH Key

Step 1: Open a terminal window and run the command $ ssh-keygen -t rsa -b 4096. This will generate a new SSH key.
Step 2: Copy the public key generated by the command above and add it to your GitHub repository settings.
Step 3: Go to your GitHub repository settings, click on 'SSH and GPG keys' in the left sidebar, and then click 'New SSH key'. Paste the copied public key into the 'Key' field.
Step 4: After adding the new SSH key, try running $ yarn run deploy again to see if the issue is resolved.

💡 Conclusion

By following these steps, you should be able to resolve the permission denied error when deploying your application to gh-pages. Remember to always keep your SSH keys up-to-date and securely stored to prevent unauthorized access to your repository.

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