A client brought me a computer that would not get on the internet in any browser.  Someone told him that he could use another browser, but of course that wouldn’t work considering that all software browsers get their setting from Windows Explorer anyway.  If the Lan Settings are using a proxy, and if you change them and they revert each time, then you most likely have a virus and until you change the settings for good there will be no browser that you can use.

In my client’s case the proxy was 127.0.0.1 on port 8877 and formed <-loopback> in Lan Settings under Internet Options in Windows 8, Explorer 11.

I first removed the viruses using the malware removal tools at http://www.youhaveavirus.com and all programs recently added in control panel.  I then opened the registry with regedit and searched for <-loopback> and deleted everything that had proxy associated with the search result.  Next I tried to reset the browser in Internet Options again.  It still reverted back to the proxy no matter what.  The proxy box would be checked every time I closed and reopened Lan Settings.  The fix was simple after this.  All you need to do is right click on Internet Explorer (THE BIG BLUE E), left click run as administrator and the browser will work and of course the proxy settings will now remain unchecked.  Hope this helps everyone.