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How to Fix WordPress Updating Failed / Publishing Failed Error

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Are you trying to fix the WordPress updating failed or publishing failed error on your website?

Sometimes, when editing a post or page, you may see the updating failed or publishing failed error. This error message does not give any clues, which makes it particularly difficult for beginners.

In this article, we will show you how to easily fix the WordPress updating failed error. We will also explain what causes this issue and how to avoid it in the future.

Fixing the updating failed or publishing failed error in WordPress post editor

What Causes the Updating Failed or Publishing Failed Error in WordPress?

Failure to communicate with the WordPress REST API causes the updating failed or publishing failed error in WordPress.

Updating failr or Publishing failed error in WordPress post editor

Basically, WordPress sometimes uses a set of APIs (programming methods) called REST API to send and receive requests to the WordPress database.

If it fails to send and receive those requests, then some parts of your WordPress website may not be able to function. These include the WordPress block editor, which uses the API to send updates and publish requests to WordPress.

Why Is WordPress Unable to Use the REST API?

You might be wondering: if I didn’t make any changes to my website, then why did the REST API stop working on its own?

There are a number of scenarios that can prevent WordPress from using the REST API. For example, you may not be connected to the internet or have lost connectivity.

Other reasons may be a little more complicated. For instance, you may have accidentally changed the site URL, a WordPress plugin might be causing the issue, or a third-party service may be blocking the API calls.

That being said, let’s take a look at how to troubleshoot and fix the WordPress updating failed error. You can use these quick links to jump between the methods:

Step 1: Check Your Internet Connection and Site URL

The most common cause for WordPress publishing failed or updating failed error is losing the WiFi connection. If your computer loses the internet connection as you are writing a blog post, then WordPress will fail to save your changes.

Make sure you are connected to the internet by visiting other websites in a new browser tab.

If your internet is working fine, then the next thing you need to check is your WordPress site URL settings.

Simply go to the Settings » General page and make sure that the ‘Site Address’ and ‘WordPress Address’ options are correct. For most websites, you should have the same URLs in both fields.

WordPress site URL setting

If your site URL settings look ok and you are connected to the internet, then you can move on to further troubleshooting.

Step 2: Update Your WordPress Software

Sometimes, the updating failed or publishing failed error may occur because you’re using an outdated WordPress version.

An outdated WordPress core can sometimes contain bugs that can interfere with various functionalities, including the publishing process. By using the latest WordPress version, you can eliminate these bugs and potentially resolve the publishing failed error.

You can check out these guides about WordPress updates for more information:

Step 3: Check REST API Status Using WordPress Site Health

WordPress comes with a built-in site health tool, which shows important information about your site’s security and performance.

Simply go to the Tools » Site Health page to view the report. If REST API is not working, then you will see it under recommended improvements as ‘The REST API encountered an unexpected result’.

REST API error in WordPress Site Health

It might also show you some debugging information, which may explain what happened when WordPress made the REST API call. Studying this may give you clues about which plugin or third-party service is causing the issue.

However, if it doesn’t give you any clues, then you can move on to the next step.

Step 4: Disable All Your WordPress Plugins

If a WordPress plugin is causing the REST API to misbehave, then the easiest way to find it out is by deactivating all your WordPress plugins.

You can go to the Plugins » Installed Plugins page and check the box at the top to select all plugins. After that, use the ‘Bulk Actions’ dropdown, select ‘Deactivate’, and then click ‘Apply’ to deactivate all plugins.

Deactivate all WordPress plugins

After that, you can go to the post editor screen and try to update the post. If the Updating Failed error disappears, then this means that one of your plugins was causing the issue.

You can now start activating your WordPress plugins one at a time and try to reproduce the error. Once you find the plugin causing the issue, you can seek support from the plugin author or find an alternative plugin.

On the other hand, if disabling all WordPress plugins didn’t make the error go away, then continue to the next step.

Step 5: Check Website Firewall Service

If you are using a website firewall service like Sucuri or Cloudflare, then there is a chance that these services may block REST API requests.

This could happen if their firewall filters consider your IP address to be suspicious. They may also block REST API requests if your website is currently facing a DDOS attack.

If you are using Cloudflare, then you can temporarily disable it to see if this resolves your issue. Typically, you can find your hosting’s Cloudflare settings in the Domains section of your hosting account dashboard.

If you are using Sucuri, then you can reach out to their support team, and they can whitelist your IP address or let you know what’s causing the issue.

Plugins and firewall services are the most common cause of the updating failed error. However, if you are still seeing the WordPress updating failed error, then there are a few more things you can do.

Step 6: Enable and Review WordPress Debug Log

WordPress comes with a built-in feature to keep a log of all WordPress errors. It does not log the REST API errors, but it will help you see if there are some other issues that may be causing the error.

Simply add the following lines to your wp-config.php file:

// Change WP_DEBUG to true

define( 'WP_DEBUG', true );

// Keep a log of WordPress errors

define( 'WP_DEBUG_LOG', true );

Don’t forget to save your changes and upload the file back to your server. For more information, check out our guide on how to easily enable WordPress debug mode.

You can now try to publish or update a post in WordPress to reproduce the error.

After that, you need to connect to your WordPress hosting account using an FTP client and go to the /wp-content/ folder. From here, simply download the debug.log file to your computer.

Debug log file in WordPress

Next, you must open the debug file in a plain text editor like Notepad.

It may contain a few errors, warnings, or notices caught by WordPress as you worked on your site or a user visited it.

Debug log file showing PHP errors in WordPress

If you see something that points to a plugin or theme file, then this can be a useful hint. You can then mention this error when asking for support on forums or from your hosting provider.

Step 7: Temporarily Switch to the Classic WordPress Editor

A temporary solution to this error is to enable the classic editor. It is the old WordPress editor that does not rely on REST API to update and publish content.

You can enable it by simply installing and activating the Classic Editor plugin.

For more details, see our step-by-step guides on how to enable the classic editor in WordPress and how to disable Gutenberg.

Upon activation, you can simply edit the post you were working on. You would be able to save and publish it without seeing the updating failed or publishing failed error in WordPress.

Classic editor

Step 8: Increase Your PHP Memory Limit

The publishing process in WordPress can involve complex tasks like image processing, plugin execution, and database interaction. All these activities require memory to function properly.

When the PHP memory limit is reached during publishing, WordPress may not be able to allocate enough resources to complete the task. This can result in various errors, including publishing failed or updating failed.

To solve this problem, you can increase the PHP memory limit to give WordPress more breathing room to handle the publishing process.

You can read our guide on how to fix the WordPress memory exhausted error for more information.

Final Step: Ask for Support

If all else fails, then you may need to ask for support. You can start by directly contacting your hosting provider. They have access to server logs and additional tools. The error could also be caused by a misconfigured server or glitch on their end.

You can also seek help on forums or in the WPBeginner Facebook Group, where other experts and users can help you fix the error.

For more details, see our article on how to properly ask for WordPress support and get it.

We hope this article helped you fix the WordPress updating failed or publishing failed error. You may also want to bookmark our complete guide on the most common WordPress errors and how to fix them, along with our top picks for the best managed WordPress hosting providers.

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Editorial Staff

Editorial Staff at WPBeginner is a team of WordPress experts led by Syed Balkhi with over 16 years of experience in WordPress, Web Hosting, eCommerce, SEO, and Marketing. Started in 2009, WPBeginner is now the largest free WordPress resource site in the industry and is often referred to as the Wikipedia for WordPress.

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Reader Interactions

16 CommentsLeave a Reply

  1. Syed Balkhi says

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  2. Gabor Horvath says

    Thank you for the detailed article.
    For me the Updating Failed error was caused by two special emoji-like characters at the end of my blogpost. I deleted them and now everything works fine. :)

  3. Jiří Vaněk says

    Thank you for the instructions and description of possible errors. He encountered this problem once. I finally found out that the Twitter feed plugin was causing the problem. So it helped to deactivate the plugin and everything went well. But I can ask about another thing related to the update. Practically every time I update the WordPress core, everything goes fine, but the process says that no key was found. I still haven’t found what the problem is.

    • WPBeginner Support says

      From the sound of the error you may want to check any reCAPTCHA you have on your site as that is the first thing that comes to mind.


      • Jiří Vaněk says

        Thank you. Yes, two plugins use reCAPTCHA. I’ll see if there’s a problem here and thanks for the push forward.

  4. Morteza says

    Thanks for your useful article…
    I troubleshoot this issue by adding a shorter URL for permalink. It seems using long permalink caused the problem..

    • WPBeginner Support says

      Thank you for sharing the issue you ran into in case someone else has the same problem :)


  5. Barney Davey says

    Thanks for the tips. I deactivated all plugins, and the error went away. Then I activated them one at a time and never found the problem. All plugins are active, and the error is gone. Fixed but without knowing the cause. I’ll take that over stressing to fix the problem any day.

    • WPBeginner Support says

      While knowing the error would be good, we’re glad to hear you were able to solve the issue!


  6. A Stuart says

    I had a major issue with this.
    Then I realized I timed out and just logged back in on a new window. I imagine might have lost my work to be updated if I used a separate tab or different machine to log in.
    Go figure!

  7. George Aprilov says

    Thank you for your advice! I reached Step 3 and followed the tedious process of deactivating and activating the plugins one by one. Finally, I found out that WooCommerce was the reason. Thanks!

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