What is the reason for the authentication failure in Azure GIT?

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There could be various reasons for authentication failure in Azure GIT, including:

1. Incorrect Username or Password: The most common reason for authentication failure is entering an incorrect username or password. Make sure you enter the correct credentials.

2. Two-factor authentication: If two-factor authentication is enabled for your account, you need to provide a security code along with your password to access the repository.

3. Repository permissions: Make sure you have the necessary permissions to access the repository.

4. Personal Access Token: If you are using a personal access token instead of a password, make sure it hasn't expired.

5. Firewall or Proxy: Ensure that your firewall or proxy isn't blocking the connection.

6. Wrong URL: Ensure that you are using the correct URL to connect to the repository.

7. Outdated Git client: If your Git client is outdated, it might cause authentication failure. Ensure that you are using the latest version of Git.