The community has found a temporary solution for Telegram PC users after mass MTProto proxy failures in Russia. As reported by "Kod Durova", enthusiasts have released an unofficial fork of Telegram Desktop for Windows, in which proxies reconnect even amidst intensified traffic filtering.
The problem arose after deep filtering systems became more accurate at recognizing MTProto connections. According to the solution's authors, the official Telegram Desktop client, when connecting via a proxy, sent a too recognizable first TLS handshake packet. This signature made it possible to distinguish the traffic from a regular browser connection and block it.
In the unofficial build, this mechanism was changed: the client makes MTProto traffic less predictable and visually more similar to a regular HTTPS connection. Thanks to this, some proxies started working again on PC.
However, the solution remains limited. The fork is only available for Windows, is not part of the official Telegram client, and is not a universal bypass method without working MTProto proxies itself. Essentially, it's a temporary community response to a new wave of failures, not a full-fledged fix from Telegram.
The story continues the May wave of problems when Russian users massively started experiencing "drops" in MTProto proxies and some VPN services. It is currently unknown whether a similar refinement will appear in the official version of Telegram Desktop.
