In many cases you web browser proxy settings can be changed. Web browsers including Internet Explorer, Mozilla Firefox, Opera, Google Chrome are vulnerable to proxy setting changes if malware like Trojan-Banker.Win32.Capper enters in PC. This malware adds a special URL to the ‘Use automatic configuration script’ option in the Internet connection settings. The CapperKiller utility is a free portable software that will eliminate this malware from infected PC and fix the proxy settings for all web browsers. If your PC is not infected by above mentioned malware but your browsers proxy settings have been changed, still you can use this guide and software recommendation within to fix your PC.