Nobody likes being delayed by the 431 HTTP ERROR code when trying to open a webpage on their browser
You should also know that any HTTP status code similar to the 4** spectrum is pointing to an issue with the client’s request. Lucky for you, troubleshooting this error code is easy.
So, before trying to contact your ISP, we’ll discuss the different causes of the HTTP ERROR 431 and how you can fix it.
In this guide, our focus will be on Google Chrome, but you can still apply this solution to other browsers.
In This Article
What are the causes of HTTP ERROR 431 in Google Chrome?
The HTTP ERROR code 431 usually shows up when the server tries to send big headers.
Unfortunately, this isn’t the only reason for the issue. The problem can also occur as a result of problematic extensions, corrupt DNS cache, and proxy servers.
Here are the effective solutions to fix the problem once and for all.
7 Effective ways to fix HTTP Error 431 in Google Chrome
Refresh the Page
Before diving into the technical solutions, make sure you refresh the page. The HTTP ERROR 431 can appear as a one-time glitch. To fix this, press the F5 or Ctrl + R hotkeys to refresh the page.
After this, if the error message still appears, try refreshing the page without using the cache. You can do this by pressing the Ctrl + Shift + R hotkeys.
Clear Cookies and Cache Data
The 431 error code can sometimes show up as a result of corrupt cookies and cache data. Just clearing your web browser’s cache can resolve the problem in most cases. To clear your browser cookies and cache data in Chrome, simply follow the instructions below:
- Open Google Chrome and click on the three dots at the top right corner.
- Select Settings from the context menu.
- Click on Privacy and security from the left pane.
- Select the Clear browsing data option.
- Checkmark Cookies and other site data and Cached images and files.
- Click on Clear Data.
Otherwise, you can press Ctrl + Shift+ Delete to access the Clear browsing data page. After this, you can click the Clear data button to clear cookies and cache data on your Google Chrome browser.
Try Incognito Mode on Chrome
Incognito mode is a unique setting on Google Chrome that gives users the access to surf the web privately. It is similar to a safe mode that is independent of the installed extensions.
So, try to open the same website or web address in incognito mode to see if the error message is appearing as a result of any installed extensions.
To open an incognito window in Chrome, click on the three dots at the top right corner and choose the New Incognito window. Another way is to press the Ctrl + Shift + N hotkeys to switch to incognito mode.
If the HTTP ERROR 431 doesn’t appear in the incognito mode, it’s most likely an issue caused by one of the installed extensions. Simply follow the next solution on how to uninstall this problematic extension.
Remove extensions causing problems
Yes, extensions help in improving productivity and efficiency to a significant extent. However, some extensions can be problematic and cause different issues, including HTTP ERROR 431.
This is why you should organize your extensions as it will help minimize the attack surface and resolve different HTTP status codes. Follow these steps to remove extensions:
- Click on the three dots in the upper right corner.
- Move the cursor to More tools and select Extensions from the context menu.
- Click on the toggle present under each extension to disable it.
- To find out which extension is exactly causing the issue, start re-enabling each extension one after the other and visit the website each time until the problem arises again.
- Once you’ve pinned which extension is causing you trouble, click on the Remove button located below that particular extension.
- Click Remove again on the confirmation prompt that appears.
Flush the DNS Cache
When your DNS cache is corrupt, this can also cause the 431 HTTP ERROR code.
As you may know, DNS translates domain names to IP addresses. However, if the DNS cache has been corrupted for some reason, the translation will fail.
Flushing the DNS cache helps resolve the issue on Windows. Follow these steps to clear the DNS cache:
- Open the Start Menu, type CMD and select Run as administrator from the right pane.
- In the Command Prompt window, type the following command and click on Enter.
- ipconfig /flushdns
- After Command Prompt has successfully flushed the cache data, reboot the system and check for the problem.
Turn Off Proxy Server Connections
Proxy servers help to keep your identity safe online. But on another part, it can make your connection unstable and cause different issues, including HTTP ERROR 431.
The solution is to turn off all active proxy server connections and see if it resolves the problem. Here’s how:
- Press the Win key to open the Start Menu, type Internet Options, and press Enter.
- Switch to the Connections tab.
- Select LAN settings.
- Uncheck Use a proxy server for your LAN box > OK.
Now, revisit the website and see if the problem persists. If it does, try the next solution in this guide.
Download the Latest Network Driver Update
Outdated and corrupt network drivers can significantly affect your internet connection. So, to keep your system free from all connection issues, simply download the latest network driver update. Follow the below instructions to download it:
- Press Win + X and select Device Manager from the list.
- Right-click on the installed Network adapters and select Update driver.
- Select Search automatically for the driver option.
- Windows will now find and download the best available driver update.
- In case your Windows can’t find any drivers, check online for your adapter manufacturer and see if they have newer drivers on the support page.
Resolving HTTP ERROR 431
You now know the steps to take whatever you come across HTTP ERROR 431.
Since the problem is usually a result of issues with the client request, the cause is most likely the outdated network driver or corrupt cache data.
Still, if you properly follow this guide, you can easily troubleshoot the problem and continue surfing the web.
However, in the worst-case scenario, if none of the solutions we’ve provided were helpful, try switching to a different web browser.