Sites are not loaded, only through a proxy. Causes?

Question

Computer networks

Hello!
Situation: The site does not load, I put the extension for the browser (so that the connection is through a proxy) - the site opens. There is a remote desktop - it also stopped connecting (I'm sure it's in the dns or ip settings (Somewhere here))
Site - opens and works on all other devices and computers. Remote Desktop - access from other computers.
What I did: Firewall turned off, I checked the computer with 2 antiviruses. Host - clean. Entered into the command line:
ipconfig / flushdns
route - f
netsh winsock reset

Answer 1

Now enter the most important thing on the command line and copy the answer here.