The world's most widely-used web browser, Chrome, is typically a stable and reliable application. However, it can sometimes encounter problems, often displaying error messages that are far from intuitive.
One of these is ERR_QUIC_PROTOCOL_ERROR, which can appear when accessing a website using the Google QUIC transport protocol. This includes many Google-owned pages.
Causes of Google ERR_QUIC_PROTOCOL_ERROR
Although this experimental protocol was created to speed up your online experience, it can sometimes fail and cause this message to appear in place of the web page you're trying to load.
There are believed to be multiple causes of ERR_QUIC_PROTOCOL_ERROR. Without detailed input from the Google development team, what you'll find around the web on this issue is mostly speculation.Tero Vesalainen / iStock / Getty Images Plus
How to Fix ERR_QUIC_PROTOCOL_ERROR
There isn't a sure-fire fix for the ERR_QUIC_PROTOCOL_ERROR code. Still, several troubleshooting methods have been known to resolve the issue.
Following the recommended steps below will fix the problem in most situations.
Load the page in another browser. The first thing to do when seeing the ERR_QUIC_PROTOCOL_ERROR in Google Chrome is to load the same web page in a different browser, such as Edge, Firefox, or Safari. If the page doesn't render as expected in one of these browsers, the problem is probably not with Chrome but with the internet connection. If the page loads correctly in another browser, the issue is specific to Chrome, and you should continue to the next section.
Disable the experimental QUIC protocol. Since the QUIC protocol might be the cause of the problem, disable it and then reload the web page in question.
Disable Chrome extensions. Chrome extensions add new features to the browser and enhance existing functionality, in most cases free of charge. Because extensions are created by third-party developers, the code can sometimes cause unintended consequences, which result in Chrome behaving erratically.
In instances where you've ruled out the likely causes and aren't sure why you still receive a particular error message, disable extensions to determine whether or not one of them is the culprit.
We recommend disabling all extensions in one fell swoop. If that fixes the problem, enable extensions one at a time until you pinpoint the specific extension responsible for the problem.
Reset Chrome to its default settings. When all else fails, reset Chrome to its original settings.
Your home page, new tab page, search engine settings, and pinned tabs are erased in this step, along with temporary files, including cache and cookies. All browser extensions are disabled as well. History, bookmarks, and saved passwords are not removed.
Contact Google support. If you're still stuck after trying all these methods, contact Google customer support for help.