Corrupted content error [Firefox, Gmail]

Matthew Adams
by Matthew Adams
Windows & Software Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things surrounding it. He is passionate about... Read more
Affiliate Disclosure
  • If you receive a corrupted content error while browsing the Internet with Firefox, there are two different culprits: the server or the browser. 
  • If the browser causes the errors, this article explores some of the things that you can do and check. 
  • The corrupted content error from Gmail can be avoided if you decide to use another browser.
  • You can also fix this problem by clearing the cache in Firefox. See how it's done in the guide below.
fix firefox corrupt content error

Some Firefox users have stated that a Corrupted Content Error arises in Firefox when they try to open a few specific websites in their browsers.

The error message states: The site at [URL] has experienced a network protocol violation that cannot be repaired.

As a consequence, users can’t open the required sites in Firefox. These are a few resolutions that will probably fix the Corrupted Content Error.

Our guide also covers the error if you experienced a network protocol violation that cannot be repaired. This error can also occur in Gmail so read below to find the solutions.

How can I fix the corrupted content errors?

1. Switch to another browser

Opera browser to fix corrupted content error

The corrupted content errors in Firefox are not so scary but they are definitely annoying because they prevent you from accessing certain websites.

So, the easiest solution to avoid them is to use a better, error-free browser like Opera. This browser is free and you will be able to import the bookmarks from Firefox in no time.

Not only that you will not experience the corrupted content error anymore but you will benefit from a lot of top features like a built-in ad blocker, automatic tab sync on all your devices, and a free, built-in VPN.

For those who are unaware, VPN is a service that redirects your online traffic through other servers around the world in order to protect your privacy.

Moreover, you will benefit from the social network buttons for Facebook Messenger, Instagram and WhatsApp.



Change your browser to Opera to avoid errors and enjoy a fast browsing experience.

2. Clear Firefox’s Cache

  1. Click the Open menu button at the top right of Firefox’s window.
  2. Select Options to open the tab in the image directly below.
  3. Click Privacy and Security on the left of the window.
  4. Scroll to the Cookies and Site Data options.
  5. Then press the Clear Data button to open the window in the shot directly below.
  6. Then select the Cached Web Content option.
  7. Press the Clear button.
  8. Alternatively, users can click Show site information on the left of the URL bar when the Page not loading tab opens. Then click Clear Cookies and Site Data to open the window shown directly below.
  9. Click the OK button to clear the cache for the sites listed on that window.

The Corrupted Content Error is usually due to corrupted caching. Firefox users have confirmed that clearing the browser’s cache fixes the issue.

That’s a lot of steps aren’t there? Also, you might want to do some extra maintenance operations.

Do them both using one simple tool: CCleaner.

Here’s why CCleaner is useful:

  • removes unwanted browser addons
  • tracks and deletes duplicate files
  • manages startup items to speed things up
  • repairs invalid registry entries

It is also able to scan and delete cookies, cache, and such from Firefox and other browsers as well.

Get CCleaner

3. Is the webpage down?

It might just be the case that the website is down. So, first of all, check if the website you’re trying to open is down or not. To do that, open the Is It Down Right Now website in a browser.

Then enter the website’s URL in the text box and click the Check button. The server status check will then tell you if the website is down or not. If it’s down, it’s possible that Firefox will show a corrupted content error.

4. Hard refresh the webpage

If the website isn’t down, try refreshing the website that the corrupted content error arises from.

However, users will need to hard refresh the page by pressing Ctrl + F5 keys at the same time in Firefox. That will hard refresh the page (or bypass the cache) to ensure that it displays updated content.

5. Clear the DNS Cache

  1. Close Firefox if it’s open.
  2. Search for cmd in Windows search and click on the Run as administrator options under Command Prompt to start the app with full privileges.
  3. Then enter ipconfig /flushdns in the Prompt’s window, and press the Return key.
  4. The Command Prompt will then state, Windows IP configuration successfully flushed the DNS Resolver Cache.

Some users have also stated that they’ve fixed the Corrupted Content Error in Gmail by clearing the DNS cache. Clearing the DNS cache will also ensure that it gets updated.

Having problems flushing the DNS? This guide comes to the rescue.

Those are the best resolutions that have fixed the Corrupted Content Error for Firefox users.

In addition, resetting Firefox by clicking Refresh Firefox on this webpage might also resolve the error for some users. If you have any other solutions in mind, write it in the comments section below.

This article covers:Topics: