ERR_QUIC_PROTOCOL_ERROR On Chrome Several Google Chrome users get an ERR_QUICK_PROTOCOL_ERROR error message when they try to open websites embedded in Google. This also means that this site is not available. This error allows users to explore some (or not all) websites on the Internet.

It looks like YouTube, Gmail and other things related to Google are charging incorrectly. This discourages users of Google’s online services.

Google is constantly looking for the latest innovations to improve Internet connectivity and ease of use. QUIC (Quick UDP Internet Connections) is a protocol used by Google to accelerate secure Internet access and remove barriers.

As a result, several Google sites offer links using this protocol, which can cause problems that lead to this error message.

Does it happen to see Err_quic_protocol_error in Google Chrome? Sometimes it is not possible to search for sites using Google Chrome. However, using other browsers is not a problem.

Err_quic_protocol_error is a temporary error that is often difficult to resolve, but ErrorCodeGuru has the answer to How to fix an Err_quic_protocol_error error in Google Chrome.

Google Chrome is one of the most stable browsers in the world, and it has been around for years and is being developed by a company that is interested in the ability to quickly and safely navigate.

Although Firefox Quantum has replaced it in terms of speed and functionality, Chrome is still used by millions of users and remains the basis for other browsers using Chromium.

The version of the browser version is very stable. It is worth noting that Google’s kids want to experiment.

Recently, they had to cancel the change to automatically play the audio file after they automatically turned off browser games on the internet. Although this is rare, such things are the price we pay for the next generation browser.

The reason for the error ERR_QUICK_PROTOCOL_ERROR”

As mentioned above, the root cause of this problem when opening Google Sites in Google Chrome is the QUIC protocol.

This protocol has been introduced to more recent versions of Chrome and causes this error in most cases.

Third-party extensions installed in Chrome can also cause problems. Therefore, it can be difficult to remove these extensions.


A short word for sites that fix this error via downloading a tool but the truth is that you do not need this, and this is a very simple solution.

Although they do not say names, sites offering a tool to resolve the complete panacea for Chrome, Windows or any program that sells snake oil. Although they offer a specific patch for this error, it does not require a patch. Use these locations carefully.

The QUIC protocol is really interesting, but instead of hiding the title, I’ll show you how to fix it before you comment.

Err_quic_protocol_error appears in fast fiber routers. I have no idea why, but slow ADSL or ADSL2 routers do not seem to have this problem. In any case, you can fix it.

  • Open Chrome, type “chrome: // flags” in the URL box and press Enter.
  • Look for the QUIC experiment log.
  • Select the box on the right and change the default setting.
  • Restart Chrome to make the changes effective.

This solution should be fairly enough to fix the Err_quic_protocol_error error in most cases. I saw a couple who did not. The only option was to uninstall and reinstall Chrome. If you have to do this, you will see how. Once you reinstall Chrome, reinsert QUIC as described above to avoid repeating.

On Windows:

  • Open the Start menu of the Windows and find Google Chrome.
  • Right-click the item and select Delete.
  • Download a new copy here.
  • Select the installer and run the installation.

On Mac:

  • Right-click on the Chrome icon in the table and select Disconnect.
  • Use the search engine to search for Chrome and drag the icon to the trash.
  • Download and install a new copy.

If reinstallation is required, this method should store all favorites and settings. Replace your basic Chrome files with new ones and collect your favorites and everything else from your computer. Chrome should now run without Err_quic_protocol_error.


Quick UDP Internet Protocol (QUIC) is an experimental network transfer mechanism you use with Google.

The idea is finally to replace the TCP protocol. By reducing TCP overhead and multiplexing flows instead of executing them sequentially, QUIC should be much, much faster than TCP.

A typical TCP connection includes a two-way flow and communication between the browser and the destination. Prior to sending the first real data packet, there is a first protocol for exchanging, confirming, synchronizing, modifying and transferring data.

This leads to delays and possible bottlenecks. When a TCP packet becomes clogged, others are stuck behind it, causing a delay.

QUIC is for speed. Instead of multiple TCP setup messages, QUIC does so in just one message. QUIC also uses UDP multiplexing, which allows multiple messages to be transmitted, even if one of them is blocked. It also includes internal overload control for maximum performance.

Another feature of QUIC is the handling of errors. It can easily process lost packets and manage losses through the speculative relay.

TCP uses overload protection, but it is limited to faster or less contextual networks. Slow or less reliable networks cause TCP problems. QUIC has its own system for limiting and stimulating packages to manage delayed or lost packets.


You can use ERR_QUIC_PROTOCOL_ERROR to fix the error in less than 10 minutes. No matter if you use Chrome on Android, Windows 10 or Windows 7, iOS or Mac, it will work well in any of these.

It does not matter if the problem occurs again or only once; you can use one of the processing methods listed above to solve the problem.

Since Google always does something new and innovative, the latest updates may have user experience without knowing it. The browser is otherwise easy to use; Google Chrome has minor problems with general settings. In exceptional cases, there is an ERR_QUIC_PROTOCOL_ERROR error, which is eliminated worldwide by leading IT professionals.

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