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How do you fix an HTTP error 407?

Alton Alexander
By Alton AlexanderUpdated on June 3rd, 2022

The Hypertext Transfer Protocol (HTTP) 407 Proxy Authentication Required client error status response code indicates that the request has not been applied because it lacks valid authentication credentials for a proxy server that is between the browser and the server that can access the requested resource.

A 407 Proxy Authentication Required message is typically issued by a web server when a user tries to access a resource that is protected by a proxy server. The proxy server must then authenticate the user before allowing them to access the resource.

There are two common ways to authenticate with a proxy server:

• Basic Access Authentication: This is the most common method and is supported by most web browsers. The proxy server will issue a 407 response and include a WWW-Authenticate header field that contains a challenge. The browser will then prompt the user for their username and password, which will be encoded and sent back to the proxy server.

• Digest Access Authentication: This method is less common but is more secure than Basic Access Authentication. With Digest Access Authentication, the proxy server will issue a 407 response and include a WWW-Authenticate header field that contains a challenge. The browser will then generate a hash of the username, password, and challenge before sending it back to the proxy server.

Other common searches for this error include:

  • error code 407
  • http error 407

1. Check the URL for errors

  1. In your web browser, type the URL for the website that you are trying to access.
  2. Click the "Inspect" link in the upper right-hand corner of the window.
  3. On the "Inspect" page, look for any errors in the URL.
  4. If there are any errors, try to fix them.
  5. If the URL still does not work, try to access the website from a different browser.
  6. If the URL still does not work, contact the website owner or administrator.

2. Check for internet connection problems

  1. Make sure your computer is connected to the internet.
  2. If your computer is connected to the internet, try to open a web browser.
  3. If you are not able to open a web browser, try to open a command prompt.
  4. If you are not able to open a command prompt, try to open a troubleshooting utility.
  5. If you are still not able to open a web browser or troubleshooting utility, try to ping a website.
  6. If you are able to ping a website, try to open a web browser.
  7. If you are still not able to open a web browser, try to open a command prompt.
  8. If you are able to open a command prompt, try to ping a website.
  9. If you are still not able to open a website, try to open a troubleshooting utility.
  10. If you are still not able to open a troubleshooting utility, try to open a Windows Defender Security Center.
  11. If you are still not able to open a Windows Defender Security Center, try to open a Command Prompt.
  12. If you are still not able to open a Command Prompt, try to open a System Properties.
  13. If you are still not able to open a System Properties, try to open a Windows Settings.
  14. If you are still not able to open a Windows Settings, try to open a Command Prompt.
  15. If you are still not able to open a Command Prompt, try to open a System Restore.

Some users might also have success with the following opitons:

  1. Check the proxy settings.
  2. Check the firewall settings.
  3. Check the browser settings.
  4. Check the server settings.