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How to Fix the “400 Bad Request Error” message from a website

Problem : 400 Bad Request Error

Whenever you access any website from a specific domain. For example….

In the URL above, the domain is “” and “morepages” is a sub-site. The problem shows as the following:

Bad Request

Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.



It wasn’t clear at first but the error message is telling me exactly what the problem is (the keyword here ladies and gentlemen is “cookie”)

The problem was due to a cookie that has become corrupted. Not sure how it got that way but it seems that the last time it was generated something went wrong.   The easy solution is to delete all your cookies but here is the best way to solve that specific issue, here is customized guide for Firefox, Chrome, and Internet Explorer.


1. Access the options from the main menu


2. Go to the Privacy tab


3. Click “remove individual cookies”


4. You will get the window below and you can search for cookies on that specific domain (in our example


5. To delete the cookies, just select and click “Remove Cookie”

6. Try accessing the site again, if you still have issues you can repeat from step 4

Internet Explorer

1. Access the options from the main menu Tools -> Internet Options

Internet Explorer1

2. Select Settings under the “Browsing history” section in the General tab

Internet Explorer2

3. Select “View files”

Internet Explorer3

4. You can search for those cookies and manually delete them

Internet Explorer4

Internet Explorer5

Google Chrome

1. Click on Settings

Google Chrome1

2. Enter “cookies” in the search field then click “Content settings”

Google Chrome2

3. Click “All cookies and site data” under Cookies

Google Chrome3

4. Select the specific cookie to delete the cookie

Google Chrome4

If you found this article useful, don’t forget to share it by clicking one of the buttons below. You can also share your thoughts in the comments section below.

That should fix the error message “400 Bad Request”, if you have any questions or concerns please leave a comment below.

Thanks to Tim Tech Support

About engrsajidrehman

SAJID REHMAN is an Electronics Engineer and working in his field for many years. His in depth field of experience is hardware Repairing and troubleshooting, especially AC/DC Drives, Electronics Controllers, Computer hardware and other PCBs. Beside all this he is a Web Designer, Graphics Designer and Content writer. You can contact him on Google and Linkedin. Thanks

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