How to Fix Err QUIC Protocol Error


Sometimes, you cannot access any website using Google chrome and receive “Err QUIC Protocol Error” with a statement stating ‘This webpage is not available’ or ‘This webpage might be temporarily down’ or ‘Permanently moved to the new web address.’

This error usually occurs when you try to open web pages integrated with Google (namely Facebook, Gmail, or Youtube). However, sometimes it also occurs while trying to open some other websites.

Google Chrome is considered one of the stable and trustable browsers on the Internet where millions of people visit every day to gain information that they require. However, this big-name also experiences issues when they try to enhance the user’s experience and provide them the better security protection.

What is Err QUIC Protocol Error?

QUIC (Quick UDP Internet Connection) is a new transport protocol for the Internet, developed by Google, which enhances the performance of connection-oriented web applications and provides security protection. It also improves online game graphics.

QUIC provides equivalent security protection to TLS (Transport Layer Security) and SSL (Secure Sockets Layer) but faster than these two.

Key features of QUIC are:

  • Reduced connection establishment time.
  • Improved congestion control.
  • Forward error correction and connection migration.

How to Fix Err QUIC Protocol Error

There are a handful of solutions you could try to solve the error. Before that, try to load web pages using other browsers to check the problem does not lie in your internet connection.

Method 1: Using the Chrome://flag Command:

One of the easiest and foremost ways to fix the “Err QUIC Protocol error” is by disabling the QUIC Protocol.

Step1: Launch your Chrome.

Step2: Go to the URL bar and type “chrome://flag,” and Press Enter.

Step3: The setting menu will open on your screen with a list of Experimental Feature.

A Message will also display on your screen with the Warning, “By enabling these features, you can lose browser data or comprise your security or privacy.” However, the procedure is safe, and hence the message can be neglected.

Step4: Under the Available section, scroll down and locate “Experimental QUIC Protocol” or Press “Ctrl + F” to open a search box.

Step5: In the search box, type “Experimental QUIC Protocol” and Press Enter.

Step6: After that, expand the drop-down menu beside the Experimental QUIC Protocol option and Select Disabled.

Step7: Restart Chrome to check whether this method successfully resolved the problem.

Method 2: Disabling Browser Extensions

One of the main reasons for the ‘Err QUIC Protocol Error’ error is Third-Party Browser Extensions. A third-party extension is a software or program that is added to a web browser to provide you additional functionality. Follow the following procedure to disable the Browser Extension.

Step1: Launch Google Chrome.

Step2: Go to the URL bar, type “chrome://extensions,” and click OK.

Step3: Extension tab will open on your screen.

Step4: To disable an extension, click Toggles on the extension that you do not require.

Step5: Restart Google Chrome to check the problem is fixed or not.

Method3: Resetting the Browser

Resetting the browser to its default setting might fix your problem. Remember that in Chrome, you can create multiple User Ids so that each user has its bookmarks, history, tabs, etc. when you will reset the chrome, the currently logged-in profile will be affected. Steps are mentioned below to Reset the Browser. Also, pay attention to that Search engine. The home page and pinned tabs will be cleared. And all the temporary files and data will be erased.

Step1: Launch Google Chrome.

Step2: Click the three vertical dots in the top–right corner and select Settings.

Step3: In the Setting menu, scroll down to the bottom and expand the Advanced dropdown.

Step4: Afterwards, again scroll down to the bottom of the page, and under the Reset and Clean Up, click on Restore to their original default.

Step5: Now, click the Reset setting to confirm the task.

Step6: Lastly, restart Chrome and check that problem is resolved.

Method 4: Checking the Proxy or Firewall Setting

Step1: Press Windows + R to open the Run Prompt.

Step2: Type “Control Panel” in the search box and click OK or press Enter.

Step3: Select Network and Internet option.

Step4: Now, click on Internet options and choose Connections from the top bar menu.

Step5: Select the LAN setting from the bottom right side.

Step6: Uncheck the Use a Proxy Server for your LAN option and check the Automatically detect settings option.

Step7: Relaunch the browser to check the error.

Method 5: Temporarily Disabling the Firewall

A Firewall is an application that filters the incoming and outgoing information and protects your PC from harmful and malicious software. First of all, disable the anti-virus program available on your PC and check has been resolved or not. If the problem still exists, then follow the following steps:

Step1: Press Windows + R to open the Run Prompt.

Step2: Type “Control Panel” in the box and click OK or press Enter.

Step3: Now, select the Category option from the view by drop-down available on the screen’s top right.

Step4: Click on the System and Security option.

Step5: Select the Windows Firewall and then select turn windows on or off from the left panel.

Step6: Select the Turn Off the Firewall option.

Step7: Relaunch Google chrome to check the error.


This article has covered an alternate solution that you could use to alleviate the Err QUIC Protocol Error. If the error persists after all methods, the site you are trying to visit might be down for maintenance. As a last resort, you can try to reinstall chrome or contact Google support.


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