I am using Telegram Desktop 0.8. I am connecting to the internet via an authenticated proxy. Telegram will not connect with such connection. How to configure it properly? Just open Settings > scroll down > Advanced > Connection type. 

Find The Configuration


HTTP Proxy



The most common proxy is HTTP. If it is yours, then check HTTP with custom http-proxy. It works with HTTPS too.
HTTP/HTTPS

SOCKS Proxy



If your proxy connection based on SOCKS, then check TCP with custom socks5-proxy.
SOCKS

Reference






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