Why GitLab Says "Could Not Read Username" and How to Fix It

What "Could Not Read Username" means and why it happens

The error "could not read username for gitlab" usually appears when you are trying to push code, pull updates, or run a GitLab command from your computer, and GitLab cannot find or verify who you are. This is not a problem with your GitLab account itself — it is a problem with how your computer is trying to talk to GitLab.

The most common cause is a missing or broken SSH key pair. When you push code to GitLab, your computer uses an SSH key to prove it is you, without typing your password every time. If that key is missing, expired, or not set up correctly, GitLab cannot read your username from it.

A second cause is that your Git configuration on your computer does not have your username stored, or it has the wrong one. A third is that you are using HTTPS instead of SSH and your stored credentials have expired or are incorrect.

Key Takeaways

SSH keys are the most common fix: generate a new pair on your computer, add the public key to your GitLab account, and test the connection with ssh -T git@gitlab.com.
Check your Git configuration by running git config --global user.name and git config --global user.email to confirm they match your GitLab account.
If you use HTTPS instead of SSH, store your credentials with git config --global credential.helper store and re-enter them once.
On Windows, check Credential Manager to see if old or wrong GitLab credentials are cached there.
If you recently changed your GitLab password, you may need to regenerate your SSH key or update your stored HTTPS credentials.

Set up or fix your SSH key

SSH is the most reliable way to connect to GitLab. Your computer generates two keys: a private key (which stays on your computer) and a public key (which you upload to GitLab). When you push code, your computer proves it is you by using the private key.

First, check whether you already have an SSH key. Open your terminal or command prompt and run:

ls -la ~/.ssh

If you see a file called id_rsa or id_ed25519, you already have a key. If not, generate one by running:

ssh-keygen -t ed25519 -C "your.email@example.com"

Press Enter when asked where to save the key (it will go to the default location). Press Enter again when asked for a passphrase (you can leave it blank, or add one for extra security). Your new key pair is now created.

Next, copy your public key. Run:

cat ~/.ssh/id_ed25519.pub

Copy the entire output. Go to your GitLab account, click your profile picture in the top right, select Preferences, then SSH Keys on the left. Paste your public key into the box and click Add key. Test the connection by running:

ssh -T git@gitlab.com

If it works, you will see a message like "Welcome to GitLab, @yourname!" If it fails, the error message will tell you what is wrong.

Check and fix your Git configuration

Git needs to know your name and email so it can record who made each commit. If these are missing or wrong, GitLab may not recognize you. Check what Git has stored by running:

git config --global user.name

git config --global user.email

If either is blank or wrong, set them to match your GitLab account:

git config --global user.name "Your Name"

git config --global user.email "your.email@example.com"

Use the email address you registered with on GitLab. After you set these, try your push or pull again.

Fix HTTPS credentials on Windows

If you use HTTPS instead of SSH, Windows stores your GitLab username and password in Credential Manager. If those credentials are old or wrong, you will see the "could not read username" error.

Open Credential Manager by pressing the Windows key, typing "credential manager", and opening it. Look for an entry that says git:https://gitlab.com or similar. Click it and select Remove. The next time you push or pull, Git will ask you to enter your username and password again. Use your GitLab username (not your email) and a personal access token instead of your password.

To create a personal access token, go to your GitLab account, click your profile picture, select Preferences, then Access Tokens. Click Add new token, give it a name, check the api and read_repository boxes, and click Create personal access token. Copy the token and use it as your password when Git asks.

Fix HTTPS credentials on Mac and Linux

On Mac and Linux, Git can store credentials in your system keychain. If your password or token has expired, you need to remove the old one and let Git ask for it again.

Run:

git config --global credential.helper store

This tells Git to remember your credentials after you enter them once. The next time you push or pull, enter your GitLab username and a personal access token (not your password). Git will save it and use it for future pushes.

If you want to remove a stored credential instead, run:

git credential-osxkeychain erase

Then type host=gitlab.com, press Enter, and press Enter again. This clears the old credential from your keychain.

Use a personal access token instead of your password

GitLab now recommends using a personal access token instead of your password for Git operations. A token is safer because you can limit what it can do and delete it without changing your password.

To create one, go to your GitLab account, click your profile picture, select Preferences, then Access Tokens. Click Add new token, give it a name like "My Computer", and check the boxes for api, read_repository, and write_repository. Click Create personal access token and copy the token when ready — you will not see it again.

If you use HTTPS, use your GitLab username and this token as your password. If you use SSH, you do not need a token — your SSH key handles authentication instead.

Verify your connection works

After you have set up your SSH key or fixed your credentials, test the connection. For SSH, run:

ssh -T git@gitlab.com

You should see a message welcoming you by your GitLab username. For HTTPS, try a straightforward push or pull on a repository you own. If both work, the error is fixed.

If you still see an error, check that you are using the correct repository URL. Run git remote -v to see what URL Git is using. It should start with either git@gitlab.com: (for SSH) or https://gitlab.com/ (for HTTPS). If it is wrong, update it with:

git remote set-url origin git@gitlab.com:yourname/yourrepo.git

Frequently Asked Questions

Do I have to use SSH, or can I use HTTPS?

Either works. SSH is slightly more find and does not require you to store a password or token on your computer. HTTPS is simpler if you are behind a corporate firewall that blocks SSH. Pick whichever fits your setup.

I generated a new SSH key but still get the error. What is wrong?

You generated the key but did not add it to GitLab. After running ssh-keygen, you must copy the public key (the .pub file) and paste it into your GitLab account under Preferences > SSH Keys. Without that step, GitLab does not know about your key.

My password changed. Do I need to regenerate my SSH key?

No. SSH keys are separate from your password. If you changed your password, your SSH key still works. If you use HTTPS, you may need to update your stored credentials or token.

What is the difference between my username and my email on GitLab?

Your username is what appears in your GitLab URL (like gitlab.com/myusername). Your email is the address you registered with. When you set up Git, use your username for git config user.name and your email for git config user.email.

I see "Permission denied (publickey)" when I test my SSH connection. What does that mean?

Your SSH key exists but GitLab does not recognize it. Check that you copied the public key (the .pub file) and pasted it into your GitLab account. If you did, try deleting the key from GitLab and adding it again. Make sure you are copying the entire key, including the ssh-ed25519 or ssh-rsa prefix at the start.

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