Proxy PAC file not working on IE11

Hi,

I'll make this as brief as possible:

Installed IE11 on Windows 7 and Proxy PAC file does not work, however Google Chrome, which gets its proxy settings from IE, is using the PAC file just fine. My PC was able to use the PAC file on IE8 and IE10. The 'Use Automatic Configuration Script' option is ticket and the PAC file path entered in this format: File://C:/Windows/pacfilename.pac

Any ideas?

Thanks.