Err_quic_protocol_error mainly occurs while opening the website of Google on Google Chrome. The cause behind this error is a protocol called QUIC.

This protocol is found in the new versions of Chrome in maximum cases, this is the reason behind such error.

If this error has been bothering you lately, follow this write up thoroughly to learn some easy fixes which will help you resolve this error without any hassle.

Easy Ways to Fix Err_quic_protocol_error on Google Chrome

QUIC protocol has still remained a mystery for many IT professionals, thus if you are facing this err_quic_protocol_error then follow this segment to get rid of it. Here, we have mentioned some easy fixes which when applied correctly, will surely help you fix this error in no time.

Solution 1: Disable Experimental QUIC Protocol

Many users claim that disabling the experimental QUIC Protocol has helped them solve this error without much difficulty. Thus, follow the steps mentioned below for a quick fix. 

• First of all, open Google Chrome.
• Once Chrome opens, go to the address bar. After that, in the address bar of the new tab, type chrome://flags/ and then hit the Enter button. 
• A warning message stating “Careful, these experiments may bite” can appear on your system screen. If you see that message, make sure to click CTRL and then F simultaneously so that you can open the search box.
• Next, you should type “Experimental QUIC protocol” and then select the “Disable” option from the drop-down menu. 
• Lastly, Open Google Chrome again and check if the error is fixed or not. 

Solution 2: Disable Web Browser Extensions

If the solution stated above did not work for you, try to disable the extensions of your web browser. To do so, follow the steps exactly as mentioned below. 

• First of all, open Google Chrome and select the Menu option. (It is shown as three vertical dots at the top right corner).
• Now, select “More tools” and tap on Extensions. Now, toggle off the Extensions one by one to disable them.
• Check Google Chrome for the issue after disabling each. If you find that disabling a particular extension resolves the error, then that extension is the culprit which you should remove immediately from Chrome.
• Just click on the Remove option below this extension to remove it permanently from Chrome.

Solution 3: Check Windows Firewall or Local Proxy Settings

This error can also appear due to some changes in the settings. Thus, make sure to check the Windows firewall or local proxy settings. Here, we have listed the steps to do so.

• Go to Start and then select Control Panel. After that, click on “Internet Options”. 
• Once you see a window, click on the Connection tab and in that tab click on Lan settings. If you notice any connection problems, fix them so that you can remove  ERR_QUIC_PROTOCOL_ERROR error 

It is extremely important for you to install and run a full system scan with a professional optimization tool since that can help you get rid of system errors, malware infections, and other similar issues easily. 

Hopefully, the solutions mentioned above will help you solve this err_quic_protocol_error without any hassle. Please let us know in the comments whether this article was helpful for you or not.