If you use 2-factor authentication in GitHub, generate a 40 character Personal Access Token that you can use as a password to access GitHub repositories.
- Log into GitHub and in the pull down at the upper right select Settings,
- On the left select Developer Settings,
- On the left select Personal access tokens,
- Click the Generate new token button,
- Enter a description for your token (so you can keep track and revoke them individually later, should you have a security breach),
- Select the repo checkbox,
- Click the Generate token button,
- Copy the token (40 characters long) to the clipboard and use that as your password on the command line.
Store or update your username and password in the Git credential helper
In macOS and Linux
Set the credential helper to store your username and password
To store the Git credentials on your hard disk in unencrypted form, use the Git Credential Store
git config credential.helper store
When you have already stored your password in the credential helper of Git and switching to 2-factor authentication, or just want to update your GitHub username or password
- In the command line execute the following to instruct the Git client to use the Wincred Windows credential helper to store your username and password
git config --global credential.helper wincred
- The next time you will access the GitHub repository to fetch, clone or push changes the Git CLI will pup up a dialog box to ask your username and password.
When you access GitHub from your Windows workstation, Windows stores your credentials in the Credential Manager. If you want to enter an updated password, enter your personal access token when you switch to 2-factor authentication or switch between GitHub accounts, delete the GitHub entry from the Credential Manager.
- Open the Windows Credential Manager
- Open a command window
control /name Microsoft.CredentialManager
- On the Windows Credentials tab click the down arrow next to github.com
- Click the Remove link
- Click Yes to delete the link.