Unable to connect to remote SQL server in management studio

I have done all the steps in this

http://blog.sqlauthority.com/2009/05/21/sql-server-fix-error-provider-named-pipes-provider-error-40-could-not-open-a-connection-to-sql-server-microsoft-sql-server-error/

but still unable to connect to remote sql server, all windows firewalls are disabled, and there is no firewall between them.

I confirmed the server name is correct.

Actually this is the error that I receive when I try to connect:

Cannot connect to Server Instance Name.

A network-related or instance-specific error occured while establishing a connection to SQL Server. The server was not found or was not accessible. ...

When I clicked Connect-> Server Name I click Browse for more... -> then network servers, Unable to locate the network server.