So, you recently went to one of your favorite websites and, instead of seeing the site you expected, you got a 504 gateway timeout error message.
Now you’re wondering why and what to do. As the name suggests, there’s a “gateway” every time you request a specific URL. Sometimes, the gateway server and the main server have a communication breakdown.
While it’s out of your hands for the most part, there are a few things you can try to resolve the issue.
A 504 gateway timeout vs. a 502 bad gateway
These two common HTTP status codes sound similar but their meanings are different. A 502 bad gateway means that the server acting as the gateway received an invalid response from the main server. A 504 gateway timeout means that the server acting as the gateway didn’t receive a response at all from the main server. You might also see a 504 show up as:
- 504 error
- HTTP error 504
- gateway timeout
- error code 504
What causes a 504 gateway timeout error message?
A 504 gateway timeout is almost always due to some malfunction on the server-side.
1. DNS changes
The Domain Name System (DNS) is the communication link between domain names and IP addresses. When there are changes in the DNS, especially during server migration, the origin server may not be configured correctly.
2. The origin server is having issues
There are a few possibilities as to why the origin server isn’t working properly. The server might be down, there could be a connectivity problem or there may be too many people on the site at the same time.
3. The firewall is blocking safe content
A firewall’s job is to block transmission between servers and to ensure protection from malicious content. Sometimes, a firewall can mistake safe content for malicious content, which prevents you from seeing what you’re trying to access.
Here’s what you can do about a 504 error message
When the electricity goes out in your home, most of the time the outage has nothing to do with you or anything inside your home. However, one of the first things you might do is check the circuit breaker. It’s easy and it helps eliminate cause on your side. Troubleshooting a 504 is similar in that there are some simple things you can do to get to the root of the problem and move toward a solution.
1. Refresh the page
Just hit the refresh button usually on the left side in your browser window. You can also press F5 on your keyboard. Did you just make a payment? If so, be careful while performing this refresh step since you might get charged twice.
2. Try another browser
Either start a new session or try an entirely new browser. Again, this is an easy troubleshooting technique so even if it doesn’t yield a solution, it didn’t take too much of your time.
3. Restart your computer and networking equipment
In addition to your computer and all devices, don’t forget to restart networking equipment like your modem and router.
4. Change your DNS server
If you’re using the default servers assigned by your ISP, you can change things by using open DNS servers like Google’s Public DNS.
5. Contact the website administrator or your internet service provider
Notifying the right people can make a difference especially if they’re unaware of the problem.
6. Be patient
Go to another site, take a nap or work on your to-do list. When you come back, the problem may have fixed itself.
Server error codes are common
Whenever you see an error message beginning with “5” that means the server isn’t able to perform the request.
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