How To fix HTTP 400 Bad Request In Windows 10 Computer?

When you surf the internet, your browser requests what you want to the server. If the server sends an HTTP code back to your browser, then you can easily browse. However, if you get an error message stating HTTP 400 bad request, then you will not be able to surf the internet. This error is different than the HTTP 504 error, which is a gateway timeout error.

There is no certain reason as to why this error occurs all of a sudden when one moment everything seemed fine, and the next moment, you were not able to browse any further. The most common step taken after your receive this error is to check the link entered in the address bar. If that is correct then you can move to the troubleshooting fixes below:

Try Changing The Browsers

Clear The Cookies

Check The URL

Log Out And Log In Again

Recent Installations

Reset The Browser

Steps To Fix HTTP 400 Bad Request In Windows 10 Computer?

Fix 1: Try Changing The Browsers

If you are in a hurry and want to surf the internet but are facing the HTTP 400 Bad Request error, then the best possible solution is to use a different browser. The All-New Microsoft Edge, which is based on Chromium, is the only browser that can be compared with Google Chrome. You can use either one instead and check if the same issue reoccurs. You can choose any browser your like.

private browser care, http 400 bad request

If you are using Android, then you must try the Private Browser Care for browsing on Android devices without fear of compromise of your browsing history and activities.

Fix 2: Clear The Cookies

clear cookie, 400 bad request
Image Source: Medium

Cookies are bits and pieces of information stored in our computer by various websites. This helps to load websites faster as not all the content is downloaded again. The cookies stored are always being modified depending on the latest version of the site, and this process can cause duplicate and corrupted cookies. This results in HTTP 400 Bad Request error which prevents you from surfing the internet.

The solution, of course, would be to remove the cookies and other temporary files stored that would not only get rid of the HTTP 400 Bad Request error but also help retrieve storage space consumed by these potentially unwanted files. There are two ways to clean them: Manual & Automatic method.

Manual Method: This includes manually cleaning cookies and cache for every browser by navigating to the settings and performing the cleaning task.

Automatic Method: This method involves using an application to optimize the computer.

How to clear cookies from browsers manually?

It is not difficult to clear the cookies by ourselves; however, the process requires time and effort. Let us start with clearing cookies in Google Chrome and then with Microsoft Edge and Firefox.

Google Chrome

clear cookie manually

Step 1: Launch the Chrome browser and click on the three dots on the top right corner.

Step 2: From the dropdown menu, click on More Tools and then choose Clear browsing data.

Step 3: Select the time range and then choose what you want to delete and click on Clear Data.

Microsoft Edge

Step 1: Launch Microsoft Edge and click on the three dots on the top right corner.

Step 2: From the menu, click on History and further select precise browsing data.

clear browser data in Microsoft edge

Step 3:  Select the time range and the data you want to be erased and click on Clear Now.


Step 1: Open Firefox and click on the hamburger menu on the top right.

Step 2: First click on Library and then click on History. Now choose Clear recent history.

Step 3: Click on time range and choose Clear Now.

How to Clear Cookies from Browsers using a Software?

It is quite convenient to use optimizing software and clear all the cookies and cache files in one go. This will help clean and maintain the system and fix any errors along with HTTP 400 Bad Request error. I have been using Advanced System Optimizer for a couple of years and have always found my computer to be in top speed with enhanced performance. The ASO is fantastic software and has the following features:

  • System CleanerAdvanced System Optimizer facilitates cleaning junk, temporary and obsolete files from the PC and guarantees a faster system and more storage space.
  • Ensures Security and Privacy – ASO helps in securing the computer by defending against malware, virus, spyware and other harmful entities. It also maintains privacy on the PC by removing surfing cookies, history, cache etc. so that your surfing events cannot be tracked.
  • Optimizing Windows OS– This software augments various aspects of the system like Game optimization that lets you have an extraordinary experience each time you play and Memory optimization, which clears your RAM.
  • Drivers Updates – ASO updates system drivers frequently.
  • Backup & Recovery – It also aids in taking backup, and store it in a secured medium to be restored in cases of mishaps like hard drive crashes. Advanced System Optimizer takes a backup and can return your files as they were.

Advanced System Optimizer

Fix 3: Check The URL.

One of the common reasons on a large scale for the HTTP 400 bad request error is due to the incorrect URL. The URL includes spellings, spaces, paths etc. which must be checked and confirmed. Only a correct address will lead to the proper webpage.

Fix 4: Log Out And Log In Again

There are a few websites that support user authentication. This means the user must sign in every time he/she visits the site. If you remain signed in for an extended time, then time can sometimes generate HTTP 400 bad request error due to strings from other past sessions. The solution would then be to remove the cookies containing the login information by logging out once and signing back in.

Fix 5: Recent Installations

Check your system for any recent app installations including extensions on your browsers. Due to lack of compatibility, the 400 HTTP bad request issues often occur and can be fixed by removing the extension, add-on or application causing this. There is no precise method to ascertain the app but can be identified by removing each newly installed app, one by one. This is also known as the trial and error method.

Fix 6: Reset The Browser

The final option to resolve this error is to reset the browser, which means you will lose all the saved passwords and settings. However, your bookmarks will stay intact.

To reset Chrome, follow these steps:

Step 1: Launch Chrome and click on the three dots on the top right corner.

Step 2: Click on Settings and scroll down and click on Advanced.

reset setting of the browser

Step 3: Once the Advanced menu opens up further, click on Reset and Clean Up.

Step 4: Click on Restore settings to their original defaults and then click on Reset Settings.

To reset Microsoft Edge, use these steps:

Step 1: Open Microsoft Edge browser and click on the three dots on the top right corner.

Step 2: Click on Settings and on the left pane options, locate Reset Settings and click on it.

locate reset setting in Microsoft Edge

Step 3: Then Click on the Reset button on the prompt that appears.

To reset Firefox, check these steps:

Step 1: Launch Firefox browser and click on the hamburger menu on the top right corner.

Step 2: Click on the Help option and then choose Troubleshooting Information.

Step 3: In the new tab, click on Refresh Firefox button on the left side of this tab.

The Final Word On How To fix HTTP 400 Bad Request In Windows 10 Computer?

The HTTP 400 Bad Request error can be quite troublesome as it does not allow you to surf the internet or browse anything else for that matter. This can be frustrating, and you can initially try restarting your modem and computer to see if that helps. The above six fixes can help you to resolve this error and get your life back on track. Do mention which one worked for you in the comments section below.

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