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How to fix Error 501 Not Implemented in WordPress

When working on your WordPress website, you will eventually stumble upon various error codes such as 404 Not Found, Service Unavailable, and Error 500. Your web browser displays such error messages when there’s some issue between the web server and an Internet browser.

One such error is 501: Not Implemented.

When you see this error on your WordPress site, don’t panic, as there are a few quick fixes for this issue that you can apply immediately. In the following paragraphs, you will read about various methods that can help you resolve the problem.


How to fix Error 501 Not Implemented in WordPress

Before you start applying any of the suggested fixes, it is essential to know a few things about Error 501 Not Implemented.

First, this is an HTTP Error with a starting code of 5xx, which indicates that the issue derives from the server side of the communication between an Internet browser and a server, unlike the Error 4xx codes that indicate just the opposite – that there’s an issue somewhere in the client-side.

Second, the 501 error message already suggests the problem – Not Implemented. To open a web page, your Internet browser sends a request to a web server, which reads this request and returns a certain type of information, which is then displayed to you via your browser. However, in certain situations, the method used to fulfill the browser request is not working properly, so the Internet browser displays an error message.

Among many others, the main causes for the 501 Not Implemented message in WordPress are:

  1. Viruses and malware. If your computer is infected, it can cause some connectivity issues and therefore display the Error 510 message. This is an exceptional case in which an error code 5xx is caused by the client side.
  2. Server overload. Sometimes, the requested server can deal with big traffic, which can result in slower working rates or a complete shutdown.

Regardless of the cause of the problem, here are some suggestions that might well help your WordPress site get rid of the 501 Error message.


Method 1: Try reloading the requested page

Although simple and straightforward, a quick page refresh might solve the problem. This fix is especially effective should the error be caused by some momentary failure in communication with the server.


Method 2: Clear your web browser’s cache

Sometimes too many cached files can cause clutter and make your web browser slow and ineffective. If this is the case, clear your cache and open the requested web page again.

If you are new to the topic, then find out what is cache and how to clean cache in WordPress.


Method 3: conduct a virus scan on your system

As mentioned, sometimes the issue might be caused by malware and various computer viruses that slow down and disrupt the proper functionality of your device. Scan your system and make a thorough cleanup. Also, don’t forget to use the latest version of antivirus software.


Method 4: contact your hosting provider

If you tried all other methods and nothing seems to work, then it is time to contact your provider and tell them what the problem is, and how you tried to fix it. The support team should be able to fix the issue and get your site up and running right away.

In fact, when searching for a hosting provider, you should always look for a brand with a reliable and skilled customer support team, as it is highly likely that you would need their help when building your websites. This is why ZETTAHOST offers its customers not only advanced server systems but also an advanced 24/7 customer support service. Check out our services and contact us for more information today!



Although Error 501 Service Unavailable might look like something very scary, it can be fixed with a few quick clicks – the methods we suggested in this article will keep your WordPress website up and running at all times.


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