Hello ,

today by mistake a joined a server that installed a script to my system due to which my settings change and it connects me to its server.
i discovered the script named taskrun.
i tried reinstalling of game, but again every thing corrupted.
i deleted that script taskrun from my system. now its over, and i can play with my choice

You need to check your config and other editable files within your game directory.

Your anti-virus software should've prompted about any file that alters others.