HomeFixesFixing Google Chrome ERR_QUIC_PROTOCOL_ERROR Issue

Fixing Google Chrome ERR_QUIC_PROTOCOL_ERROR Issue



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Google Chrome is a widely-used web browser, but many users are unable to access the websites they want to browse due to the issue ERR_QUIC_PROTOCOL_ERROR. Each time they try to load a particular webpage, it ends up showing the error message,

“This site can’t be reached. The webpage at xxxxxxx might be temporarily down or it has moved permanently to a new web address. ERR_QUIC_PROTOCOL_ERROR.”


This Chrome browser problem happens because of different reasons. It can be an error with your network connection or proxy settings. Sometimes, the browser extensions may be the cause of the issue. 

How to Troubleshoot & Fix the ERR_QUIC_PROTOCOL_ERROR Problem on Google Chrome Browser

You can troubleshoot the Google Chrome browser error with the troubleshooting methods we have listed below. This particular issue also appears on Chromium-based browsers such as Microsoft Edge, Opera, and Brave on Chromebook or Mac computers and Windows 10/11 PC.

Try to follow each step one at a time and see if it works in resolving the QUIC Protocol issue or not.

Method #1 – Reload the Webpage

Hit the Refresh button on your Google Chrome browser and wait until it reloads the webpage. If you continue to see the same error message, move to the next method.

Method #2 – Refresh your Router

If it is a problem with your WiFi connection, you can refresh your router. Turn off your router device and wait for at least 3 minutes. Then, turn it back on and reconnect to the Internet. You can also try to refresh the WiFi network on your device.

Method #3 – Disable Google Chrome Browser Extensions

  • On your Google Chrome browser, go to chrome://extensions/.
  • Look for possible extensions that may be causing the error. Toggle the button to disable.
  • Restart your Google Chrome browser and try reloading the page.

Method #4 – Disable the Experimental QUIC Protocol on your Google Chrome Browser

  • On your Google Chrome browser, go to chrome://flags.
  • Scroll down and look for Experimental QUIC protocol. If you cannot find it, use the Search box.
  • Click the drop-down menu next to Experimental QUIC protocol.
  • Select Disabled.
  • Close the Chrome Flags window and restart your Google Chrome browser.

Method #5 – Clear Browsing Cache, History, and Cookies

  • On your Google Chrome browser, click the three-dotted icon or More button.
  • Select More tools.
  • Click Clear browsing data.
  • Set the Time Range to All Time.
  • Check the boxes next to Cookies and other site data, Cached images and files, and Browsing history.
  • Click Clear Data.

What else did you do to troubleshoot the error on your Google Chrome browser? You can share your solutions with us down below.

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