Fix 400 Bad Request error

Error 400 Bad Request is an HTTP status code, also abbreviated as Error 400, meaning that your request to the web server, which may often be a simple request such as loading a web page, is incorrect or That this request has been corrupted in such a way that the service provider is unable to receive or understand it, and therefore causes an error 400.

Error 400 Bad Request, which means bad request and is part of the 4XX error, has different output on different websites, ie sites may make changes in the way these errors are output according to internal policies; So you (in the face of this error) may see something like the one in the shortlist below, or you may encounter another simple type.


How error 400 is displayed

400 Bad Request

Bad Request. Your browser sent a request that this server could not understand.

Bad Request – Invalid URL

Bad Request: Error 400

HTTP Error 400 – Bad Request

400 – Bad request. The request could not be understood by the server due to malformed syntax. The client should not repeat the reque

In order of meaning:

  • Inappropriate request 400
  • Improper request. Your browser is sending a request that is not understood by your server.
  • Improper request. Invalid URL
  • Improper Request: Error 400
  • HTTP request request hostname is invalid.
  • Improper request. The request could not be understood by the server due to improper combination or order. Theuser or client should not repeat and resubmit this request without making any changes.

Error 400 Bad Request is displayed in the Internet web browser window (meaning the same as browsers) as other web pages. 400 Bad Request Errors, like other such errors, can be found in any operating system and any type of browser.

In Internet Explorer (IE), the message “The webpage cannot be found” indicates a 400 Bad Request error. Of course, the IE browser mentions this error in its title below and says HTTP 400 Bad Request, or something very close to that. Other browsers display the error in the same way as above.


Cause of Error 400 Bad Request

An improper request request 400, or 400 Bad Request, is most often caused by entering or entering an incorrect URL in an address window, however, there are other relatively common causes for this error.

Note: Web servers running Microsoft IIS provide more specialized information about the cause of the 400 Bad Request error by adding a number after the number 400. You can see a complete list of these numbers and their meaning in this link.

Error 400 Telegram and Instagram

Error 400 is very common on Telegram and Instagram, as well as on social networks. Of course, by reading the following solutions, you can fix the 400 bad request error and get rid of this problem forever.


How to fix 400 Bad Request error

  1. Check for possible errors in the URL. The most common reason for an incorrect request error is 400 due to incorrect spelling of the website or link where a certain type of error is seen as a syntax error. Important: The above is the most likely cause of the problem if you encounter an inappropriate request error. So specifically check for extra or invalid characters in the URL, such as the% character. In a standard URL, something like the% character should not be seen.
  2. Clear your browser cookies, especially if you encounter an unsolicited request error associated with Google service. Many sites display an error message of 400 if the cookie (browser) is reading or the cookies are too old and out of date.
  3. The next solution is to clear the DNS cache, as this will fix the 400 Bad Request error; If the cause of this error is a history of outdated DNS stored on your computer. Do this (clear cache) by running the ipconfig / flushdns command in the command line window in Windows. We talked about DNS cache at the end of Reduce DNS lookups. Note: Note that item 2, which was a cookie, is different from item 3, which is DNS-related.
  4. The next solution to Error 400 is to clear your browser cache. A copy of a webpage that is cached but lost and you get a 400 message when you try to access it can be the root of the problem (improper request 400 error). Although clearing the cache is unlikely to be the most effective way to fix most issues with the inappropriate 400 request, it is a quick, easy, and cost-effective way to fix it.
  5. To troubleshoot problem 400, troubleshoot it like error 504, even if the problem is reported as error 400.
  6. If you are uploading a file to a website and you encounter an error loading it, you are more likely to get a bad request 400 error due to the size of the file, in which case the file may be rejected by the server or server. . In some very rare cases, two servers may take a long time to communicate, but you will be mistakenly reported an inappropriate 400 message.
  7. If error 400 occurs on almost every website you visit, it is probably a problem with your computer or internet connection. Test your internet speed and talk to your internet service provider or ISP to make sure all the setup steps are correct.
  8. Contact the website that hosts the page directly. It is possible that the 400 error is not due to a mistake on your part, but is due to an issue that the site host needs to resolve, in which case you will be able to inform them of the defect by contacting and reporting it. They are very useful.
  9. If none of the above works and you are sure that there is something wrong with your computer, stop and check it at another time.


Are you still facing error 400?

Although it is unlikely, but if you have done all the above and suggestions to fix the 400 error, but you still encounter the 400 Bad Request error when opening a page or website, raise this issue in specialized forums so that a solution can be found. Provide tailored to your specific problems.

The site also provides a very complete explanation of this error and reading it is not without merit. We hope that this free content, which is for the purpose of complete SEO training for free, has been satisfied by you friends. We look forward to your comments and experiences on these issues.

Of course, note that although error 400 or error 401 does not affect the SEO site, but some errors such as error 404 are effective in internal SEO, and because all these cases are in the 4XX family, that is why we in SEO teaching have most of the important errors in this family in We evaluate SEO articles.

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