There are instances when you attempt to open a website and encounter a message flashing on your screen “502 bad gateway”.
This may be frustrating to you and you wish to get rid of it as soon as possible.
There might be several causes that could throw the following error. Whatever may be the cause, you need to root out the cause of the issue whether it is a server error or something else.
In this comprehensive guide, we will explain the possible causes and the solution to the issue 502 bad gateway.
So, let’s dig in.
Understanding 502 Bad Gateway
This is the most common issue that you may encounter when trying to open a website and the message will be displayed on your screen. This message indicates that one server got an invalid response from another. In short, you have connected with an interim device that is unable to fetch all the bits you need to load the website. Something went wrong and the message appeared on your screen.
Therefore, understanding what causes may be behind the scenes may help you root out the issue. Let’s elaborate.
Whenever you enter a URL into the address bar and try to load a site, your browser sends a request to the site’s server. The server then processes that request and then displays the website’s content on your screen.
What Exactly Does the 502 Bad Gateway
The hypertext transfer protocol (HTTP), is a set of rules that regulate the web released by the Internet Engineering Task Force (IETF) and checks every Internet transaction. In the HTTP system, problems are denoted as a unique number. Here is what this unique 502 indicates.
- Proxies: If you have encountered a bad gateway note, means you’re working with a gateway or proxy server.
- Connection: The proxy server tried to work with the origin server.
- Mistake: Sometimes the proxy gets some kind of invalid response from the server this bad gateway note appears.
Causes of 502 Bad Gateway Error
There might be various causes triggering the 502 bad gateway
- An unresolved domain name: In certain instances when there could be connectivity issues between the domain name and your IP address. This is more common and often happens when a website recently migrated from one web host to a new hosting provider, and the DNS server hasn’t had time to propagate.
- An oversensitive firewall: If your website (perhaps a WordPress site with a firewall plugin) or your web host has firewall settings that are too restrictive, some Internet providers or IP addresses may be blocked.
Fixes to Resolve the 502 Bad Gateway
- Reload the website: In certain instances, the server connectivity issues are resolved relatively quickly. Therefore wait for a minute and try reloading the webpage. The page loads without any error, if there is nothing so big.
- Look for Server Connectivity Issues: Most websites on the web live on multiple servers or third-party hosting providers. In such instances, when the website’s server is down for maintenance or any other reason, the website could display visitors a 502 Bad Gateway Error page. Therefore you can do nothing except wait for the server to finish maintenance or fix the problem causing the error.
- Check For DNS settings: If the website recently changed host servers or moved your website to a different IP address, it’ll make changes to your website’s DNS server. This could cause the website to display its visitors a 502 Bad Gateway error page. The website won’t be up for smooth running until these DNS settings change. Once changed you may get the page loaded quickly.
- Remove Browser caches: Sometimes accumulation of lots of browser cookies and caches may hinder loading web pages. Remove all the caches, which may contain outdated site data or corrupted files, leading to the Bad Gateway error.
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