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.
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. 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.
