Some of our customers block QUIC traffic from their end users' machines. This is often because their firewall is unable to inspect TLS traffic when sent over QUIC, or they block all UDP traffic by default.
Web browsers like Edge offer a way to disable the QUIC protocol through a group policy. However, these group policies intentionally don't apply to WebView2 applications.
We would like to offer our users an option to disable QUIC in the WebView2 used by our add-in. We have found that trying to use QUIC when UDP traffic is blocked may result in degraded performance or even prevent the add-in from making HTTP requests to servers that support HTTP/3.