What Is ‘401 Bad Request’ And How To Resolve It?
401 Bad Request
400 Bad Request Errors are HTTP client errors that fall within the 400–499 status code range. These errors occur when a communication issue arises between your website’s server and the visitor’s browser.
It has several reasons which includes:
- Mismatched information between the Domain Name System (DNS) and the local DNS cache.
- Corrupted browser cookies or cached files.
- Uploading a file that exceeds the server’s size limit.
Solutions
- To fix the issue, start by checking the URL. Retype it carefully and make sure it is correct. Double-check the spelling and verify that the link points to the intended page. If you clicked a link, try accessing the page directly through the website instead.
- Next, clear your browser’s cookies and cache. In many cases, this simple step resolves 400 Bad Request errors. Browsers store images, scripts, and other website data to improve loading speed. However, when this stored data becomes outdated or corrupted, the server may reject the request.
- If the problem persists, deactivate your WordPress plugins and test the site again. Some security-focused plugins may interpret unusual login activity as a potential threat and trigger a 400 error. By disabling the plugins temporarily, you can identify whether one of them is causing the issue.
If these solutions do not solve the issue, it may be necessary to check the server-side logs or contact the API or endpoint provider for further support.
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