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Why am I receiving a ‘503 Service Unavailable’ error?
Posted Thursday April 17th 2014 / Category Troubleshooting

The cause of a ‘503 Service Unavailable’ error is typically high resource consumption by your web hosting service, or more directly a script inside it.

You can determine the cause through a range of methods:

  • Check Resource Usage within cPanel to determine if you’re hitting your CloudLinux limits.
  • Check AWStats within cPanel to see if there is an unusual traffic hitting your website; particularly foreign IP’s maliciously targeting you.
  • If you have customised your PHP environment, ensure you haven’t set memory_limit too high.
  • Disable any unnecessary scripts and plugins.

If you are unable to determine the cause, you may need to get in touch with our Technical Support team via eTicket.

Can’t find the answers you're looking for? Check out these other methods of support!