Unlike this post, I am on macOS.

I have the password configured in GitLab. I also have an SSL key created after the project was made on GitLab.

When I use an existing folder for a new project and follow the steps below, I am prompted to enter my GitLab username and password.

Existing folder

cd existing_folder
git init
git remote add origin https://gitlab.com/sobopla/Geronimod.git
git add .
git commit -m "Initial commit"
git push -u origin master

After the password is entered I get the following error.

remote: HTTP Basic: Access denied fatal: Authentication failed for 'https://gitlab.com/myname/myproject'

It happens every time I'm forced to change the Windows password and none of the above answers helped me.

Try the below solution which works for me:

1. Go to Windows Credential Manager. This is done in an EN-US Windows by pressing the Windows Key and typing 'credential'. In other localized Windows variants you need to use the localized term (See comments for some examples).

   alternatively you can use the shortcut control /name Microsoft.CredentialManager in the run dialog (WIN+R)

2. Edit the git entry under Windows Credentials, replacing old password with the new one.