Malformed URLs often cause the 400 – Bad Request error. WordPress has a built-in system for creating SEO-friendly permalinks , and resetting them can fix most common URL issues.
Simply go to the Settings ” Permalinks” page and click the “Save Changes” button at the bottom without making any changes.
Reset permalinks
This will regenerate the .htaccess file and the error may be resolved.
7. Hire a WordPress Support Expert
Fixing errors like “400 Bad Request” can be a bit annoying and time consuming for beginners. If you are not able to fix the error or do not want to deal with technical issues, then it might be time to seek the help of a WordPress expert.
For example, you can check out our Premium WordPress Support Service . For a small fee, you can hire professional WordPress engineers to fix any errors on your website.
WPBeginner Pro Services
Our expert WordPress developers will analyze and fix the error for you. This is an on-demand service, which switzerland telemarketing data means there are no contracts and you can pay a flat fee to get your website back to normal quickly. Click here to get in touch with a WordPress expert .
Troubleshooting Tips
Below are some additional resources that may be helpful in resolving 400 Bad Request errors on your website:
Beginner's Guide to Troubleshooting WordPress Errors
Most Common WordPress Errors and How to Fix Them
How to Easily Add Custom Code to WordPress (Without Breaking Your Site)
How to Clear Cache in WordPress (Step by Step)
How to Easily Enable WordPress Debug Mode to Fix Site Errors
We hope this article helped you resolve the admin Ajax 400 – Bad Request error in WordPress. You may also want to check out our checklist of important WordPress maintenance tasks to perform regularly or take a look at our top tips for improving your WordPress admin area .
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