AdGuard DNS Issue⁩ With QR In Windows

Hello,

I am facing a persistent issue where QR code-based authentication (such as web service logins) consistently fails and hangs when my Windows device uses my customized AdGuard DNS-over-HTTPS (DoH) profile.

Here are the technical details:
The issue immediately disappears as soon as l disable the DoH profile and revert to a standard connection.

During the failed QR login attempts, the AdGuard Query Log shows no blocked domains (all related requests are marked as "Processed" or do not appear at all).

This indicates that a backend WebSocket, persistent session handshake, or real-time API endpoint required for session synchronization is either being silently dropped, ignored, or affected by the filtering rules.


### Platform

Windows

### Protocol

DNS-over-HTTPS

### Do you use AdGuard app?

Yes I am