Magento can't login in admin with right username and password

Question

I just freshly installed Magento(1.7.0.2) on my localhost(LAMP). Now after installation when I wanted to go for the admin panel it asked me for the username and

Answer 1

It's not right way to comment cookie params cause in future it will be push on server and make many problems. I know this from personal experience.

The best solution is rename the local url into a form more or less has the appearance of a typical url, having at least a point in a row. As example: http://yoursitename.local