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How To Fix Microsoft Error 400 Bad Request



If you have a bad request for Microsoft Error 400 on your system, this guide might help you. This error (Bad HTTP 400 request) means that Internet Explorer was able to connect to the web server, but the web page could not be found due to an address problem.



  • 2 minutes to read.
  • Applies to:
    Exchange Server 2016 Enterprise Edition, Exchange Server 2016 Standard Edition, Exchange Server 2013 Enterprise, Exchange Server 2013 Standard Edition, Exchange Server 2010 Standard, Exchange Server 2010 Enterprise
  • What Is Bad Request Error 400?

    microsoft error 400 bad request

    A bad request 400, also known as 400 or an error, is interpreted by the server as a generic client error and is returned if the server determines that the error does not fall into one of the other status code categories.

    The key concept here is that a “400 Bad Request” error is associated with a request sent by the client even before it is processed by the server.

    How To Fix 400 Bad Request Error

    1. Check URL for errors . The most common cause of a 400 Bad Request error is an incorrect URL or the link that the user clicked on It refers to an invalid URL with a specific error, for example: B. Problem with syntax .

      This is probably the problem when you get the 400 Bad Request error. Look for additional characters in the URL that are usually not allowed, such as the percent sign. While there are perfectly valid uses for something like the% sign, you won’t often find it in a standard URL.

    2. Delete cookies from your browser , especially if the Google service throws an error because of a bad request. Many websites report error 400 if the read cookie is damaged or too old.

    3. Clear your DNS cache to fix the 400 Bad Queries error if it is caused by outdated DNS DNS records stored on your computer. To do this on Windows, run this command from a Command Prompt Window :

      ipconfig / flushdns 

      This is not the same as clearing the browser cache.

    4. Clear your browser cache . A cached but corrupted copy of the webpage you are trying to access may be causing the error displaying error 400. Cleaning upIt probably won’t solve most of the 400 bad query problems, but it does. It’s quick and easy and well worth trying.

    5. While this is not a common solution, try to fix the problem as 504 Gateway Timeout even if the problem is reported as 400 Bad Request.

      In some relatively rare situations, communication between the two servers can take too long (gateway timeout issue), but the problem is incorrectly reported to you as 400 Bad Request.

    6. If you are uploading a file to a website while the error is displayed, the 400 Bad Request error is most likely because the file is too large and the server has rejected it.

      If the site allows, compress the file into a zip file and download it.

    7. If error 400 occurs on almost every website you visit, the problem is most likely with your computer or Internet connection. Run a Internet Speed ​​Test and check with your ISP if everything is configured correctly.

    8. Contact the website that hosts this page. It is possible that the error 400 Bad Request on your part is not something bad, but something that you need to fix. In this case, it would be very helpful to inform them about it.

      Most websites have social media contacts and sometimes even phone numbers and email addresses.

      If an entire website crashes with a 400 Bad Request error, a Twitter search for # websitedown is often helpful; B. # facebookdown or