How to make RDP connection not using HTTP proxy in KRDC/FreeRDP?

Help
1

I’m trying to use KRDC to connect through RDP with a host in local network however the connection can’t be established due to the following error:

kwi 01 12:12:29 demon krdc[4220]: [12:12:29:671] [4220:4220] [ERROR][com.free
rdp.core.proxy] - HTTP Reply headers too long: HTTP/1.1 403 Forbidden
kwi 01 12:12:29 demon krdc[4220]: [12:12:29:671] [4220:4220] [ERROR][com.free
rdp.core.nego] - Protocol Security Negotiation Failure

It seems it tries to use HTTP proxy and I can’t see how to disable using HTTP proxy in the UI below:

Screenshot_20250401_122115
Screenshot_20250401_122115685×894 71.7 KB

2

FreeRDP used by KRCD has very simplistic NO_PROXY environment variable support (There is no way to ignore proxy in env.var · Issue #4697 · FreeRDP/FreeRDP · GitHub).
If it happens that the value of your NO_PROXY is not supported by FreeRDP you have to modify it or alternatively set https_proxy and HTTPS_PROXY (both needed) when running KRCD/FreeRDP.