How to reset Internet Explorer proxy settings

1. In Windows 7, click the Start button . In the search box, type run, and then, in the list of results, click Run.
   -or-
   In Windows Vista, click the Start button , and then click Run.
   -or-
   In Windows XP, click Start, and then click Run.
2. Copy and paste or type the following text in the Open box in the Run dialog box:
   reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyEnable /t REG_DWORD /d 0 /f
3. Click OK.
4. In Windows 7, click the Start button . In the search box, type run, and then, in the list of results, click Run.
   -or-
   In Windows Vista, click the Start button , and then click Run.
   -or-
   In Windows XP, click Start, and then click Run.
5. Copy and paste or type the following text in the Open box in the Run dialog box:
   reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyServer /f
6. Click OK.

Restart Internet Explorer !