How to Fix Err_Quic_Protocol_Error

When using Google Chrome, you may see an Err_Quic_Protocol_Error message that says “This webpage is not available”, “This webpage might be temporarily unavailable”, or “Permanently transferred to the new web address”.

When you try to open online pages that are integrated with Google, you will frequently get this error (namely Facebook, Gmail, or Youtube). However, it might also happen when you try to open other websites.

How To Guides
How To Guides

Google Chrome is regarded as one of the most reliable and trustworthy browsers on the Internet, with millions of people using it every day to obtain information.

However, when this well-known brand tries to improve the user’s experience and give stronger security protection, it runs into problems.

What is the meaning of Err_Quic_Protocol_Error

QUIC (Quick UDP Internet Connection) is a new Internet transport protocol created by Google that improves the efficiency of connection-oriented web applications while also ensuring security. It also improves the graphics of online games.

TLS (Transport Layer Security) and SSL (Secure Sockets Layer) give similar security protection, however, QUIC is faster.

The following are some of QUIC’s key features:

  • The time it takes to create a connection has been reduced.
  • Congestion control has improved.
  • Connection migration and forward error correction

Err_Quic_Protocol_Error How to Resolve

You can attempt a few different options to fix the problem. Before you do that, try loading online pages in different browsers to be sure the problem isn’t with your internet connection.

Method 1:  The Chrome:/flag command

Disabling the QUIC Protocol is one of the simplest and most effective solutions to resolve the Err_Quic_Protocol_Error.

Step 1: Open your Chrome browser.

Step 2: Type “chrome:/flag” into the URL bar and press Enter.

Step 3: A list of Experimental Features will appear in the settings menu on your screen.

By allowing these features, you risk losing browser data or jeopardizing your security or privacy“, a message will appear on your screen. However, because the operation is safe, the notification can be ignored.

Step 4: Scroll down to “Experimental QUIC Protocol” in the Available section, or press “Ctrl + F” to launch a search box.

Step 5: Type “Experimental QUIC Protocol” into the search box and press Enter.

Step 6: Then, beside the Experimental QUIC Protocol option, expand the drop-down box and select Disabled.

Step 7: Restart Chrome to see if this method was successful in resolving the issue.

Method 2: Disabling Browser Extensions

Third-Party Browser Extensions are one of the most common causes of the Err_Quic_Protocol_Error error. A third-party extension is a software or a program that is installed on top of a web browser to add new features.

To disable the Browser Extension, follow the steps below:

Step 1: To begin, open Google Chrome.

Step 2: Type “chrome:/extensions” into the URL bar and click OK.

Step 3: A tab for extensions will appear on your screen.

Step 4: To disable an extension, go to Toggles and choose the one you don’t need.

Step 5: Restart Google Chrome to see if the issue has been resolved.

Method 3: Resetting the Browser

It’s possible that resetting the browser to its default settings will solve your problem. Remember that you can establish several User Ids in Chrome so that each user gets their own bookmarks, history, tabs, and so on.

The currently logged-in profile will be affected if you reset Chrome.

The steps to Reset the Browser are listed below. Pay attention to that Search engine as well. The main page will be cleared, as well as any pinned tabs. All temporary files and data will be deleted as well.

Step 1: To begin, open Google Chrome.

Step 2: Select Settings from the three vertical dots in the top–right corner.

Step 3: Scroll down to the bottom of the Setting menu and expand the Advanced dropdown.

Step 4: After that, scroll down to the bottom of the page and select Restore to their original default under Reset and Clean Up.

Step 5: Confirm the task by clicking the Reset setting.

Step 6: Finally, restart Chrome to ensure that the issue has been repaired.

Method 4: Examining the Proxy or Firewall Configuration

Step 1: Open the Run Prompt by pressing Windows + R.

Step 2: In the search box, type “Control Panel” and hit OK or Enter.

Step 3: Go to the Network and Internet tab.

Step 4: From the top bar menu, select Internet settings and then Connections.

Step 5: From the bottom right corner, select the LAN configuration.

Step 6: Check the Automatically detect settings option and uncheck the Use a Proxy Server for your LAN option.

Step 7: Check the error by relaunching the browser.

Method 5: Turning Off the Firewall for a While

A firewall is a program that filters incoming and outgoing data and protects your computer from unwanted and hazardous applications. First, turn off any anti-virus software on your computer and see if the problem has been repaired.

If the problem persists, proceed with the procedures below:

Step 1: Open the Run Prompt by pressing Windows + R.

Step 2: In the box, type “Control Panel” and press OK or Enter.

Step 3: In the top right corner of the screen, select the Category option from the view by drop-down menu.

Step 4: Select System and Security from the drop-down menu.

Step 5: From the left panel, pick Windows Firewall, and then toggle windows on or off.

Step 6: Select the option to Turn Off the Firewall.

Step 7: Check the error by relaunching Google Chrome.


This article has discussed a different option for dealing with the Err_Quic_Protocol_Error. If the issue remains after you’ve tried everything, the site you’re trying to access may be unavailable due to maintenance.

You might try reinstalling Chrome or contacting Google support as the last option.