Git: force user and password prompt

Question

I recently updated my local Git installation to 1.8.1 from 1.8.0.1.

I\'m noticing that, when I work on GitHub, it doesn\'t prompt me for

Answer 1

Addition to third answer: If you're using non-english Windows, you can find "Credentials Manager" through "Control panel" > "User Accounts" > "Credentials Manager" Icon of Credentials Manager