Have you ever met the error message “400 Bad Request. Request Header or Cookie Too Large”? This issue is commonly associated with websites that use the Nginx web server. Typically, such websites may not allow the use of browser cookies beyond a certain size limit, or the cookie stored in your browser may have become corrupted. However, this NewsPivot post has ways to fix this problem. Let me guide you through the steps to resolve the “cookie too big” issue.

If you’re using Google Chrome, you can fix this error by checking and deleting the cookies of that particular domain in the cookie section of Chrome. Here are the steps:

Step 1: Open Google Chrome on your PC and click on Settings.

Step 2: Go to Privacy and security and click the Site Settings option.

click Site Settings

Step 3: Click on Cookies and site data, select See all cookies and site data, and then click the Remove All option.

Next, check if the “Request Header Or Cookie Too Large” issue has been resolved.

If you are a Microsoft Edge user, this part is for you. The steps are as follows:

Step 1: Click the three horizontal dots in the upper right corner and select Settings.

Step 2: Click Privacy and security on the left panel, scroll down to find the Clear browsing data part, and click on Choose what to clear.

clear browsing data in Microsoft Edge

Step 3: Select Cookies and other site data and click on Clear now.

the Clear browsing data window

Then, restart your Microsoft Edge to see if the error has been fixed.

Also read: chrome://net-internals/#dns – Clear/Flush the DNS Cache on Chrome

For users who are Internet Explorer, follow the steps below to fix the “request header too large” issue:

Step 1: Launch IE, click the Settings icon, and select Internet options from the drop-down menu.

Step 2: Go to the General tab and click the Browsing History part. Then click Settings > View files.

the Website Data Settings window

Step 3: Search for the relevant website in the folder you just opened in File Explorer and delete the cookies. Then, check if the “cookie too big” issue disappears.

If you’re using Firefox, the solution is the same, that is, you need to delete the cache files of that particular website to fix the ” Request Header Or Cookie Too Large ” issue. Here’s how to do it:

Step 1: Open Firefox, click Options, and click the Privacy option.

Step 2: Select History and click the Remove individual cookies option. Now search for the website that is bothering you and delete the cookies associated with it.

Step 3: Restart Firefox to check if the issue has been fixed.

Read more: How to Import Bookmarks from Edge to Chrome on Windows?

Final Thoughts

After reading this post, you can learn how to fix the “Request Header Or Cookie Too Large” issue on Google Chrome, Microsoft Edge, Internet Explorer, and Firefox. Go and follow the corresponding steps to solve your problem.

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