HTTP ERROR: 504 when try to go to my yahoo?

Question

i can't access myyahoo.com

Answer 1

504 errors in the HTTP cycle

    Any client (e.g. your Web browser ) goes through the following cycle when it communicates with your Web server:

        * Obtain an IP address from the IP name of your site (your site URL without the leading 'http://'). This lookup (conversion of IP name to IP address) is provided by domain name servers (DNSs).

        * Open an IP socket connection to that IP address.

        * Write an HTTP data stream through that socket.

        * Receive an HTTP data stream back from your Web server in response. This data stream contains status codes whose values are determined by the HTTP protocol. Parse this data stream for status codes and other useful information.

    This error occurs in the final step above when the client receives an HTTP status code that it recognises as '504'.

Resolving 504 errors - general

    This problem is entirely due to slow IP communication between back-end computers, possibly including your Web server. Only the people who set up the network at the site which hosts the Web server can fix this problem.

Resolving 504 errors - CheckUpDown

    Use of proxies and caching is increasing on the Web. The   real computer that actually hosts your Web site,  do not have complete control over where  HTTP request actually ends up. If only one link in the chain of computers dealing with  HTTP request is broken, then an error such as 504 can easily occur.

In short, 504 is a Gateway Timeout.

Gateway timeouts are normally issued by proxy servers when an upstream or support server doesn't respond to a request in a timely fashion.    All you can do is keep trying.