502 Bad Gateway Errors are independent of the particular setup, which means that you can encounter this on any operating system in any browser while using any device. This error does not specify why this error occurred in the first place. All you know is that something went wrong with the server, and you are going to fix it.
To tackle the problems that comprise the dreadful 502 Bad Gateway Error, you need to understand what exactly this error is and the most common reasons for this error to occur to find their respective solutions.
What exactly is a 502 Bad Gateway Error?
502 bad gateway error is an HTTP status code response, which means that one server on the internet receives an invalid response from the other server. It is safe to say that the 502 Bad Gateway error is a general indicator that tells us that something went wrong with the website’s server communication. Even though it is considered to be a server-site problem, it is also possible that there might be something wrong on your end as well. Here are some reasons that can cause this error.
DNS Changes
Most commonly, 502 Bad Gateway errors can occur when you change the host servers or move your website to another IP address. Your website would not be able to work properly until these DNS changes take full effect. This process can take a few hours.
Firewall Configurations
We are all aware that the firewall’s basic purpose is to protect our site from malicious visitors. But a faulty firewall configuration can cause more problems that might result in rejecting the requests from the content delivery network, giving you bad 502 gateway error.
Go through your website’s code
Another reason for this tiresome error to occur is the mistakes in your website’s code. Go through your code to find bugs and perform a debug process that allows you to see the exact moment where things went awry.
Fixing a 502 Bad Gateway Error
502 Bad Gateway Error is a networking error and might be temporary, so it can be fixed by simply reloading the URL. If the page loads with no error, then your problem seems to be fixed. And if the problem persists, then clear your browser cache and then reload the page again.
Contact your Host
If nothing else worked, you could always contact your host. They can look deeper into your problem and help you find the most accurate solution.