Cause of 400 Bad Request Errors

The 400 Bad Request error is an HTTP status codethat means that the request you sent to the website server (e.g. a request to load a web page) was somehow malformed therefore the server was unable to understand or process the request.

How To Fix the 400 Bad Request Error

1. Check for errors in the URL. The most common reason for a 400 Bad Request error is because theURL was typed wrong or the link that was clicked on points to a URL with some kind of mistake in it.
    
2. Though it‘s rare, the 400 Bad Request error could be an issue with the web site‘s server that you are trying to access. You may want to attempt to contact the webmaster or another site contact and inform them of the error message. The webmaster of most Internet sites can be reached via email at webmaster@website.com, replacing website.com with the actual website name.

Still Getting 400 Errors?

If you‘ve followed the advice above but you‘re still getting a 400 Bad Request error when trying to open a certain webpage or site, see Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more.

Be sure to let me know that the error is an HTTP 400 error and what steps, if any, you‘ve already taken to fix the problem.

Errors Like 400 Bad Request

The following messages are also client-side errors and so are related to the 400 Bad Request error:

401 Unauthorized | 403 Forbidden | 404 Not Found | 408 Request Timeout

Server-side HTTP status codes also exist, like the commonly seen 500 Internal Server Error. There are many others too, all of which you can see in my List of HTTP Status Code Errors.