I just move my Magento store to my localhost environment for testing use, I also using Git to maintain code, but after I move all the files to my local environment, I can't login my admin page, but I can still see my frontend pages, and the git, the database, seems works well.

When I type a wrong admin/password to my admin page, it still gives me "Invalid password". But when I enter the right one, it just refresh the page and stay at the login page, nothing happens.

Does anyone has met this problem before? Has any ideas?

Thanks in advance!