How to Fix WordPress Failed to load resource 404 status error

I’m back with another weird WordPress fix for likely a problem encountered by many, whether you ever admit to it or not. 😜

At the request of a customer that’s been with us 10 years and counting now, I’m working to update and fix a few aged items relating to their website’s user experience.

Everything was going well until I attempted to upgrade the website to use a more lightweight and intuitive plugin to create a “before and after” slideshow of their project work. 🤨

To complicate things a bit, I unknowingly experimented with a few discontinued WordPress plugins no longer supported.

So wish WordPress developers would update their plugins more often with discontinued support messages. 😤  But I digress.

Each time I would install, activate, configure, and implement a image gallery or slideshow plugin for WordPress, I encountered the same error:

Failed to load resource: the server responded with a status of 404 (Not Found)

Using Chrome Developer Tools, I discovered the message above listed for a variety of image, javascript, and css files supposedly related to the newly active WordPress plugin.

What could be the issue? 🤔 I initially thought the plugin was to blame. So, I proceeded to deactivate and delete each WordPress plugin in search and hope of a another plugin to use without error.

Slow learner I may be, but it wasn’t until the 4th or 5th WordPress plugin that my light bulb came on, especially witnessing the plugin working without error in a localhost environment operating on my MAC and on a few other customer websites.

But what could be the issue causing 404 status errors popping up when I know and can see with my own eyes that the file path exists? 🤔

First things first, check the spelling of the path. Well, fortunately I could spell well this day and all checked out well. 🤣

Next, permissions. When it doubt, the first place I should have looked with installation and configuration of the initial WordPress plugin was the permissions of the /wp-content/plugins folder.

Sure enough, that was the very culprit causing the 404 status error issue: WRONG FILE PERMISSIONS. 🤯

I don’t know how it happened, but the directory permissions for the “plugin” directory were incorrect. I changed the directory to both “755” (recommended) and “777”, and both worked like a charm.  But I settled for using “755” permissions.  🙌👏

And now my customer is happy, and I am too, having solved yet another “Failed to load resource” error message.

I hope this helps you! Do feel free to drop a question or comment should you need further assistance.

Fix WordPress Failed to load resource 404 status and error Click To Tweet
Written by Alvin Brown
He's an experienced and passionate serial entrepreneur, founder and publisher of Kickstart Commerce. Alvin possesses a great love for startups dominating their market using profitable digital strategies for greater commerce.