git-credential-winstore works perfect with github and bitbucket repositories, but the prompt does not pop up while working with self hosted repositories. I can\' t see what
Copy git-credential-winstore.exe
into C:\Program Files (x86)\Git\libexec\git-core
Execute 'git-credential-winstore.exe' and say 'yes'.
Use "wincred" in place of "winstore". It will work. It solved same problem for me.
Update 2016:
Use the Git Credential for Windows: available here on Microsoft's GitHub organisation account
Install it and it just works, nothing to configure.