Sometimes while surfing through the net on google chrome, you may not be able to get access to the websites. Instead, you get an error notification saying ERR_QUIC_PROTOCOL_ERROR, and also, it is written that this site cannot be reached. The website may be temporarily down or sometimes you also see another error of Google Chrome has stopped working, you can fix both the error very easily.

Generally, you receive this error message only when the website is temporarily down but if you realize that you get this same error notification every time you searched any URL link/websites that means it’s not that the website is down or something, there can be a problem with your computer.

In this article, I will tell you ways in which you can solve this error. First, let us see what this error means.


The full form of QUIC is called a quick UDP internet connection. It is a feature found in google chrome and is an experimental transport layer network protocol. Next comers the function; its function is to connect the two endpoints over user datagram protocol that is your UDP. 

Why was it created? It offers users security protection that could be compared to TLS ( transport layer security)/ SSL ( secure socket layer) and will allow faster browsing experience and better graphics for your online gaming.

Let me conclude the core benefits of this feature:

  • Faster connection establishment
  • Better congestion control
  • Forward error correction and correction migration.

Now, let us move to the solution part.

4 Best Methods to Fix ERR_QUIC_PROTOCOL_ERROR in Google Chrome

There are a handful of troubleshooting methods that can use to solve this problem. The first one always should be that you close the apps that are running and then try restarting your computer or opening the google chrome again. It can do with the help of the task manager.

Method 1: Disable the QUIC Protocol

One of the easiest ways to resolve this problem is to disable the QUIC protocol simply. For executing this method, you just have to follow the guidelines/steps given below:

1. Start your google chrome.

2. In the URL bar/address bar type “chrome://flags” without the quotes and then press the enter button.

3. Then a window will appear, which will display a list of experimental features. Navigate to the available section under that scroll down and locate “experimental QUIC protocol.” If you want a much easier way, then you can get just the right experimental QUIC protocol in the search bar located on the top of the page.

Navigate to Experimental QUIC Protocol
Experimental QUIC Protocol

4. Expand the drop-down menu and select disable as soon as you do this you will get a pop-up notification to relaunch your google chrome by saving the changes that you just made. Click on the button saying restart/relaunch your chrome. 

Click on Relaunch Button to fix ERR_QUIC_PROTOCOL_ERROR
Click on Relaunch Button

5. After you relaunch your google chrome, your QUIC protocol will be disabled, and your problem will be solved.

Method 2: Remove the Third Party Google Extension

If the above method does not help and the ERR_QUIC_PROTOCOL_ERROR persists, then move to this method.

As you must be knowing that third party extension helps to enhance your browsing experience and also offer customized web surfing experience. But sometimes, this can be the cause of the QUIC protocol error.

So, you have to disable the third-party extension to check if this solves your problem or not. For this, you just have to follow the steps given below:

1. First, you have to launch your google chrome.

2. Then in the URL bar/ address bar type “chrome://extension” without quotes and hit enter.

3. A window will appear that click the toggle on the extensions that are available to disable them.

Disable the Extension to fix ERR_QUIC_PROTOCOL_ERROR
Disable the Extension

4. Now, you just have to restart your chrome browser and check if the error persists or not. If the error is no more there, that means your third party extension was the primary cause, and now, by disabling them, you have resolved the error. However, if the error is still there, that means the purpose of the error lies somewhere else, and we need to find it now, for that you have to move to the next step. 

5. But first, you have to type chrome again://extension in the address bar and enable all the extensions.

Method 3: Disable the Firewall Temporarily

Your firewall protects, monitor, and control all the outgoing and incoming network traffic. It protects your private information and software from viruses and malicious software. Sometimes, if also bocks some sites that may not be that harmful, and you need to use it. For this, you can check by disabling the firewall temporarily. For this follow the steps one by one:

Read on: 9 Ways to Fix 0x80070035: The Network Path Was Not Found

1. Open the Run dialog box by pressing the Windows key and R.

2. After that, type control panel in the dialogue box and press enter.

3. A window will appear to click on categories > system and security > windows firewall.

Click on Windows Defender Firewall
Windows Defender Firewall

4. On the left side of the screen, you will see the option of turning the firewall on or off

Click on Turn Windows Defender Firewall On or Off
Turn Windows Defender Firewall On or Off

5. Select turn off and then click ok to save the changes.

Click on Turn Off Windows Defender Firewall Option to fix ERR_QUIC_PROTOCOL_ERROR
Turn Off Windows Defender Firewall

6. Now, you have to visit the website that was not opening earlier to check if the error persists or not.

We hope this will resolve the ERR_QUIC_PROTOCOL_ERROR easily.

Method 4: Disable the VPN When Login into your User Account

You can try disabling the VPN to fix this error. It can be done by following the steps given below:

1. Go to the start menu.

2. Then setting or you can directly open the setting by pressing the Windows key and I.

3. Then go to network and internet -> proxy

4. Now click on the toggle to turn on automatically detect settings.

Click on toggle to turn on Automatically Detect Settings
Turn on Automatically Detect Settings

5. Then turn off the use of a proxy server option.

6. Then you have to go to the network and internet and click on the VPN.

7. Select the connection you want to remove then click on the Remove option.

Click on Remove Option to fix ERR_QUIC_PROTOCOL_ERROR
Click on Remove Option

8. Then remove to confirm.

Now, you can go back to that website to check if the ERR_QUIC_PROTOCOL_ERROR is still there or not.

Final Words

The methods mentioned above are simple and can be easily carried out and will surely help you to Fix ERR_QUIC_PROTOCOL_ERROR problem. You can also reset you google chrome and restart your computer.

If the problem persists, then I would suggest you contact google support for further help. I hope this article was a help. 

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