Let’s look into the troubleshooting tips for “nonce_failure” on WordPress. At Bobcares, with our WordPress Support Services, we can handle your WordPress issues.

What is “nonce_failure” on WordPress?

The “nonce_failure” on a WordPress site can occur when we update theme files, delete comments, or edit/delete posts. It is a security token consisting of letters and numbers and appends to URLs. It has an important authentication role to protect the site from remote access by hackers. WordPress generates nonces automatically when we perform certain actions in the WordPress backend like deleting a comment or trashing a post.

“Nonce” simply denotes a number used once. However, the site uses the nonces several times throughout the 24 hours. In other words, nonces have a maximum life of one day until they expire.

The error appears when the WordPress site is unable to authenticate the token. So we see the nonce_failure message.

How to fix the “nonce_failure” on WordPress?

In this section, we will see some simple methods to troubleshoot the nonce_failure on WordPress.

1. Clear the site cache

The nonce_failure issue could be caused by the cache sending WordPress a nonce that has expired. Repeat the task that led to the nonce_failure after the cache has been cleared. Most likely, this fixes the error.

2. Disable the plugins

The functionality of WordPress may be incompatible with some website plugins, resulting in the nonce_failure error. In this case, disable all the plugins and re-enable them one by one, each time repeating the task that resulted in the error. Upon activation of a particular plugin, the error may reappear. Once we find the plugin responsible for the error, we should update or replace it.

While updating a plugin, check the WordPress dashboard for any pending plugin updates. The solution for the plugin issue may be already included in the update.

3. Disable cache plugin

Disable the cache plugin to see if any of its settings are causing the site to see “nonce_failure.” If deactivating it resolves the problem, then re-enable it and carefully examine its settings.

4. FTP software

As the WordPress nonce_failure is related to the WordPress site, we can use any FTP software in order to edit the site file to avoid the nonce_error.

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Conclusion

In this article, we include some of the simple methods from our Tech team to troubleshoot the nonce_failure on the WordPress site, along with providing a brief introduction to the error.