Problem Multisite in a localhost

Hi, I’m trying to use multisites in localhost. Right now I’m using WAMP but it happened the exact same thing with Bitnami. Basically I follow all the steps: modifying the wp-config file, selecting subdirectories as an option and finally changing the wp-config and .htaccess files with the codes given to me by wordpress. After I click log in I’m sent to my front page (localhost/wordpress) and whenever I tried to access the admin log in page (either through my blog or through localhost/wordpress/wp-admin) I enter some kind of loop and I’m redirected to localhost/wordpress. Any suggestions? Thanks!