How to fix HTTP Error 431?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The 431 status code indicates that the server is unwilling to process the request because its headers are too large. The request may be resubmitted after reducing the size of the request headers.

Other common searches for this error include:

  • 431 error code
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1. Check the URL for errors

To check the URL for errors in order to fix http error 431:

  1. Open your web browser and navigate to the page that is causing the http error 431.
  2. If you can see the page, there may be something wrong with the URL. Make sure the URL is spelled correctly, includes the correct domain name, and includes the correct path.
  3. If the URL is correct, but the http error 431 persists, there may be a problem with the server. Check the server's status and try to connect to it again. If the problem is with the server, there may not be a fix.

2. Clear your browser's cache and cookies

  1. Open your web browser and navigate to the page that is causing the http error 431.
  2. Click on the gear icon in the top right corner of the browser window and select "Settings".
  3. On the "Settings" page, click on the "Advanced" button.
  4. On the "Advanced" page, click on the "Clear browsing data" button.
  5. Click on the "OK" button to confirm the Clear browsing data process.
  6. Close your web browser and start over from the beginning of the guide if you experience any further http errors.

3. Try using a different browser

  1. Open a new browser window and type "about:support" into the address bar.
  2. Click on the "browser support" link located near the bottom of the page.
  3. Under "Browser type and version," select the version of the browser you are using.
  4. Click on the "Get help" button.
  5. If you are using a Windows computer, you will need to click on the "Download" button next to the "Windows 8.1" section.
  6. If you are using a Mac, you will need to click on the "Download" button next to the "OS X" section.
  7. Once the download has finished, double-click on the "Browser Helper" file.
  8. Follow the on-screen instructions to install the Browser Helper.
  9. Once the Browser Helper has been installed, open it and click on the "Fix http errors" button.
  10. Select the http error you are experiencing from the list and click on the "Fix" button.

4. Contact the website owner

  1. Go to the website address in your web browser.
  2. Type the website address into the address bar.
  3. Press Enter.
  4. Look for a menu item that says "Contact Us."
  5. Click on the menu item.
  6. Choose the option to send an email.
  7. Type the email address that you used to sign up for the website into the email address field.
  8. Type the message that you would like to send to the website owner in the message field.
  9. Click on the send button.

Some users might also have success with:

  1. Check your computer's firewall.