Windows 7 – Unable to Block Website Through System32/Drivers/Etc/Hosts

I found the solution thanks to the comment of @Rik. I had used the code that had been made for Apple operating systems, while in Windows I should have used ::1 instead of fe80::1%lo0. Anyway changing the file in this way solved the problem.

127.0.0.1     facebook.com
127.0.0.1     www.facebook.com
127.0.0.1   login.facebook.com
127.0.0.1   www.login.facebook.com
127.0.0.1   fbcdn.net
127.0.0.1   www.fbcdn.net
127.0.0.1   fbcdn.com
127.0.0.1   www.fbcdn.com
127.0.0.1   static.ak.fbcdn.net
127.0.0.1   static.ak.connect.facebook.com
127.0.0.1   connect.facebook.net
127.0.0.1   www.connect.facebook.net
127.0.0.1   apps.facebook.com


# Block Facebook IPv6
#fe80::1%lo0     localhost
::1     facebook.com
::1     www.facebook.com
::1     login.facebook.com
::1     www.login.facebook.com
::1     fbcdn.net
::1     www.fbcdn.net
::1     fbcdn.com
::1     www.fbcdn.com
::1     static.ak.fbcdn.net
::1     static.ak.connect.facebook.com
::1     connect.facebook.net
::1     www.connect.facebook.net
::1     apps.facebook.com
::1     edge-star6-shv-02-ams2.facebook.com

I noticed that your /etc/hosts file has permission 600. The permissions on that file should generally be 644. If your application can't read /etc/hosts then it will just use DNS.