How to solve “HTTP 400 Bad Request – Request header too long” error An obvious solution is to decrease the number Active Directory groups users are member of. However, this is a not a practical solution in many companies due to user count and membership hierarchy. A better solution is to decrease MaxFieldLength and MaxRequestBytes values.
What does HTTP error 400 mean?
26/03/2021 · How to Fix the 400 Bad Request Error. Check for errors in the URL. Clear your browser's cookies, especially if you're getting a Bad Request error with a Google service. Clear your DNS cache, which should fix the 400 Bad Request error if it's being caused by outdated DNS records that your computer is storing. Clear your browser's cache.
What does bad request header field too long mean in IIS?
28/04/2019 · public async Task
How to fix “400 Bad request header or cookie too large”?
How to Fix the 400 Bad Request Error. Check for errorsin the URL. Clear your browser’s cookies, especially if you’re getting a Bad Request errorwith a Google service. Clear your DNS cache, which should fix the 400 Bad Request errorif it’s being caused by outdated DNS records that your computer is storing.
How to fix “400 Bad Request” error in Google Chrome?
26/11/2018 · How to solve “HTTP 400 Bad Request – Request header too long” error . An obvious solution is to decrease the number Active Directory groups users are member of. However, this is a not a practical solution in many companies due to user count and membership hierarchy. A better solution is to decrease MaxFieldLength and MaxRequestBytes values.
How do I fix the header is too long?
The “Bad Request – Request Too Long” error is exclusive to Chrome. Typically the solution is to clear the cache and cookies in your Chrome browser, making sure to completely close all browser windows and tabs after doing so.06-May-2019
How do I fix bad request size for request header field exceeds server limit?
Size of a request header field exceeds server limit. This is normally caused by having a very large Cookie, so a request header field exceeded the limit set for Web Server. For client side: Clear the cache of your web browser should be fine.29-Jul-2018
What does it mean when your computer says bad request header field too long?
The HTTP 431 Request Header Fields Too Large response status code indicates that the server refuses to process the request because the request's HTTP headers are too long. ... Servers will often produce this status if: The Referer URL is too long. There are too many Cookies sent in the request.13-Aug-2021
How do I fix 400 Bad Request request header or Cookie too large?
If you receive this error frequently, the best thing to do is to delete the Cookies for that particular domain. Let us say, if you are receiving this error when you visit any page on say, example.com, then you should delete all the Cookies of example.com from your browser's cache.08-Jul-2018
How do I fix Error 400?
How to fix a 400 Bad Request?Recheck the URL. Since a malformed URL is the most common cause of the 400 Bad Request error, make sure there are no typing or syntax errors in your URL. ... Check your internet connection. ... Clear browser cookies. ... Clear DNS Cache. ... Compress the file. ... Deactivate browser extensions. ... Restart your system.
What causes Error 400 Bad Request?
A 400 Bad Request Error occurs when a request sent to the website server is incorrect or corrupt, and the server receiving the request can't understand it. Occasionally, the problem is on the website itself, and there's not much you can do about that.20-Jul-2018
What does 400 request header or cookie too large mean?
When you go to visit a web page, if the server finds that the size of the Cookie for that domain is too large or that some Cookie is corrupted, it will refuse to serve you the web page. Instead, in you browser window, it will show you 400 Bad Request, Request Header or Cookie Too Large.27-May-2020
How do I get rid of bad requests on Chrome?
How Do I Fix a 400 Bad Request Error?Click on the menu icon, go to History, click again on History.Then select Clear browsing data.Check all the three options available to delete your cache, cookies, and history.Then select the time range and hit the Clear data button.03-Sept-2020
How to calculate optimum MaxFieldLength and MaxRequestBytes values?
There is a formula to calculate optimum values for these fields. This formula uses MaxTokenSize value as input. In this page, it is recommended to set MaxTokenSize to a value lower than 48,000 bytes.
How to set MaxFieldLength and MaxRequestBytes values?
These values are stored in the following Registry container: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HTTP\Parameters. As a rule of thumb, make sure to backup registry before making any changes.
Recommendation for MaxFieldLength and MaxRequestBytes values
As a best practice;the smaller the values, the better for IIS kernel memory usage and security.The best approach would be gradually increasing these values and keeping an eyeon 400 errors in IIS logs. The minimum values that don’t cause 400 errors would be the best values.
What is a nginx web server?
The Nginx web server is the sculpt. Sometimes, websites that use the software do not allow the use of browser cookies of a certain size, or the cookie stored in the browser may be corrupted. Now, let’s see how to fix the “cookie too big” issue.
How to fix 400 bad request?
Here are the details. Step 1: Open Google Chrome and click the Settings option. Step 2: Navigate to the Privacy and security part and click the Site settings option.
How to fix a request header that is too large?
Step 1: Click the Settings icon and select Internet options from the drop-down menu. Step 2: Navigate to the General tab and go to the Browsing History part. Then click Settings and click View files.
How to remove cookies from a website?
Here is how to do that: Step 1: Open Firefox and click the Options. Then, click the Privacy option. Step 2: Select History and click the Remove individual cookies option. Now search for the website which is troubling you and delete the cookies related to it.
How to clear Microsoft Edge?
If you are the Microsoft Edge user, you can read this part. Now, the steps are as follows: Step 1: Click the three horizontal dots in the upper right-hand corner. Step 2: Now, click the Privacy & Security tab. Go to the Choose what to clear part and click choose what to clear option.
The Issue
The issue occurs when the browser tries to access SharePoint and creates an HTTP request which includes an authorization token which is either too large for IIS to handle or is corrupt. From some research online I’ve found that this can be caused by the number of Active Directory groups a user is a part of which may also be worth checking.
The Solution
The quickest way to resolve the issue is to simply clear all cookies from the browser you use, this can be done in most browsers by pressing CTRL + Shift + Delete on your keyboard when the browser is selected and then clearing the following depending on browser –
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