What is 400 Bad Request Error Code, and How to Fix The Error?
by Janani
Updated Mar 28, 2023
What is 400 Bad Request Error Code?
The 400 Bad Request error code is an HTTP status code that indicates that the server cannot process the client's request due to malformed syntax. This means that the client sent a request that the server could not understand, or that the request was invalid or corrupt in some way. The error message can be triggered by a variety of issues, including an incorrect URL, an invalid parameter, or a request that exceeds the server's file size limit. It is a client-side error, meaning that the problem is with the request being sent by the client rather than with the server.
How to Fix 400 Bad Request Error Code?
When a client error occurs, such as a malformed request syntax, invalid message framing, or misleading routing, the server responds with the HTTP 400 Bad Request status code to indicate that it cannot or will not handle the request. There are several methods to fix the 400 Bad Request Error Code.
1) Clear Browser Cache or Cookies
Consider clearing your browser's cache and cookies to resolve this issue. If you are a Google Chrome user, follow these steps:
2) Turn Off Browser Extensions
To troubleshoot the HTTP 400 bad request error caused by extensions on Google Chrome, follow these steps:
3) Double Check the Domain Address and Use Encoder/decoder Tool
Verifying the domain address is crucial to prevent the HTTP status 400 bad request error, which often occurs due to an incorrect URL. This error can result from various issues, such as a mistyped URL, malformed syntax, or illegal characters in the URL.
4) Search the Keyword
In some cases, even when you are certain that the URL is accurate, the error message can still persist. If you know the title of the page or article you're looking for, try searching for relevant keywords on the website or through a search engine. Occasionally, the title can even be visible in the URL.
5) Flush DNS Cache
When you visit a website, your computer performs a DNS lookup to find the nameservers and IP addresses associated with the domain name. The IP addresses of the web servers are then stored in the DNS cache of your operating system to reduce the DNS lookup process on future visits.
However, if the DNS cache is outdated or corrupted, it can cause the HTTP error 400 bad requests. To resolve this issue, you need to flush the DNS cache. The process of flushing the DNS cache varies depending on the operating system you are using.
On Microsoft Windows 10
On macOS X
sudo killall -HUP mDNSResponder.
On Google Chrome
6) Check the File Size
An HTTP status 400 bad request error may occur if you try to upload a file that exceeds the server's file size limit. Most websites have different file upload limits, so it's essential to check whether the file you want to upload fits within the limit.
7) Restart Your PC and Other Hardware
8) Contact the Site Owner
If you have exhausted all the options to fix the 400 bad request error and the problem persists, it may be a misconfiguration on the website owner's end that needs to be fixed. In such a situation, you can try to visit the website's contact page and fill out a contact form, if available. Alternatively, you can try to find the website owner's email address or social media accounts and send them a message explaining the issue you're encountering. It's essential to be polite and provide as much information as possible about the error, including any steps you have taken to try to fix it. The website owner may not be aware of the problem, so reporting it can help them fix it for other users as well.
Cause of 400 Bad Request Error Code
The 400 bad request error code is typically caused by an issue with the client's request sent to the server. Specifically, the server is unable to understand and process the request due to invalid syntax, incomplete information, or conflicting headers.
This can happen for a variety of reasons, such as
What is 400 Bad Request Error Code - FAQs
The 400 Bad Request error code is an HTTP status code that indicates that the server cannot process the client's request due to malformed syntax
In some cases, network issues lead to 400 Bad Request Error Codes.
Microsoft Office, or simply Office, is a discontinued family of client software, server software, and services developed by Microsoft.
Microsoft Corporation is the manufacturer of Microsoft Office.