How to fix error 503 backend fetch failed on WordPress

You may have seen Error 503 backend fetch failed on WordPress when you were using Windows, Mac, or Linux OS to browse. What is it then? Why do most people do it? What does this message mean? We’ve answered every question about this problem below, so take a look at everything in detail and find out how to fix it right away.

As you guys already know, computers are too complicated to understand from the inside out because they are made up of millions and millions of tiny parts that have been put together in one space.

At the moment, humans depend on the most recent and up-to-date machines and technology, which have made our lives much easier and better over the past 100 years. The newest, coolest tech lets us do our work quickly and easily in just a few hours.

So, friends, if you get an Error 503 backend fetch failed message on WordPress? Then I’d like to explain that this error can happen no matter what operating system (Windows, Mac, or Linux) you’re using or what device (smartphone, tablet, iPad, etc.) you’re using to browse the web.

Not sure how to fix this mistake?

Well, there are several tried-and-true ways to fix the Error 503 backend fetch failed on WordPress problem. If you do what they say, you should be able to fix it on your own without needing technical help from a third party.

So let’s get started and figure out how to fix it. But before we do that, I’d like to explain in detail what Error 503 is and why it usually happens when you’re browsing.

How to fix error 503 backend fetch failed on WordPress

What is error 503 backend fetch failed WordPress

Error 503 is usually a server problem that means the server isn’t ready to handle the request. This http error 503 service unavailable server error response code usually happens when the browser’s cache memory is full and can’t hold any more requests.

People often run into this error when they use Magento, which is an open-source e-commerce platform written in PHP code. Even while making changes to a WordPress site, this can happen. But no matter what, when it shows up, it’s the first sign that something else is stopping the browser from getting to the website server.

In this case, the server in question won’t be able to handle the information that was asked for, but the exact reason won’t be clear at the time. You’ll often get the frustratingly vague advice to “try again later” or be told that the server can’t respond or is giving too slow results.

Error 503 backend fetch failed on WordPress – Common Reasons

Now we’ll talk about the most common ones. Here are a few common and good reasons why you might get the Error 503 backend fetch failed on WordPress message while using a browser like Chrome, Mozilla Firefox, Opera, Edge, or Safari.

Internet Speed Is Slow

One of the most common reasons you might see this error while browsing is because your Internet connection is too slow or there are problems with your network connection. If you have a slow internet connection and try to go to a domain or website, the site will take too long to load or won’t load at all. Because of this, too many requests pile up, and the website’s data builds up in the cache server’s memory. This is what causes this error.

Site Server Under Maintenance

It’s possible that you’ve been having this problem because the server was being worked on. Some websites need maintenance sometimes, so if that’s the case, you might see this error on your screen.

Another common situation that leads to the Error 503 backend fetch failed on WordPress error message is testing and development. So, when a site’s server, like nginx, is temporarily being worked on, all of your requests might get put in a queue, which could cause an internal server error.

Blocking Websites That Look Dangerous

We usually block a few suspicious websites with anti-virus tools or ad-blocking extensions to make it safer to browse, right?

So, when you use an ad-blocking or anti-virus tool to block a certain site, it stops a lot of content from showing up on the screen. This is also one reason why you might get Error 503 when you’re browsing. If you make too many requests on a website, you might fill up the cache server’s memory queue.

How to Fix error 503 backend fetch failed on WordPress

We have definitely learned about this mistake and talked about why it happened. Now it’s time to start looking for answers. So here we are with solutions that work every time. You can try to fix this error by doing one of the following:

PHP script

The error may occur due to poorly written PHP script. So, if that’s the case, undo the changes and try again. You can even look further what’s the right way to code the script. So, this will fix the issue in few minutes!

Reload website or web page

Reloading a website may seem like a simple thing to do, but it mostly helps you get past Error 503 when you’re browsing. So, just tap the “Refresh” button to reload the site and see if that fixes the problem.

Check for the Plugins

It’s better to check for the plugins, if these are outdated then just update them. If you have recently added a plugin and it is causing issue, then just remove it from the backend and the issue will be fixed.

Try again in 2 minutes

There could be a small problem in the back end, a problem with the internet as a whole, or a problem with your ISP. So, it’s best not to freak out and just try again in 2 or 5 minutes. If there is a deployment in progress, it will be finished and you will get a response of 200 OK.

Close the other open tabs

Since “Error 503 backend fetch failed on WordPress” usually happens when the cache server is temporarily overloaded, you don’t want to take any chances, right?

When you get this error on a certain website, make sure you close all other tabs and services to make the cache server memory less busy.

Use a different web browser

You might not know what’s going on in the background of your browser. Yes, it’s too hard to figure out. So, if you’re having trouble getting to a certain website, try reopening it in a different web browser like Microsoft Edge, Chrome, or Opera to see if the Error 503 server problem is still there.

WiFi Router Restart

Most technical problems can be fixed by rebooting. Here’s what you should do. Turn off your WiFi router, wait 30 to 45 seconds, and then turn it back on. Restart your system and reload the website to see if that fixed the problem.

Update or Reset Your Web Browser

This server-related error is almost impossible to fix without using the reset button. If none of the things on the list above work, try resetting your web browser to start over. You can even check for updates and make them to the browser.

Start the thing over

Sometimes the problem is with your system, so it’s always a good idea to shut it down and start it back up. This trick has been working lately to fix the error. I’ve tried it, so you should as well.

Use a default WordPress theme

If disabling plugins didn’t fix Error 503 backend fetch failed on WordPress, go to a default WordPress theme. This disables your WordPress theme. Start by connecting to your WordPress website using FTP or cPanel File Manager. Connect to /wp-content/themes/.

Download your current WordPress theme to your computer as a backup. You can remove your website theme after downloading it.

If you have a default theme like 2022 or 2023, it will activate immediately. If not, put a default design for your site and thoroughly check the website – may be this will fix the problem.

So far, that’s all we know about the Error 503 backend fetch failed on WordPress problem you might run into while you’re browsing. If you’re still having trouble with this on your machine, I’d say to talk to a professional.

We hope that these 10 solutions will help you fix the error you’re having while working on WordPress so that you can enjoy a better, safer browsing experience. And finally, if you like it, don’t forget to tell your friends!