This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Microsoft IPv6-Aware Proxy Helper API Definitions supported in Firefox?

  • 2 iimpendulo
  • 1 inayo le ngxaki
  • 13 views
  • Impendulo yokugqibela ngu finitarry

more options

Can no longer reach the internet through our proxy server using our global corporate proxy PAC file after updating the PAC file with Microsoft's 'IPv6-Aware Proxy Helper API Definitions' (http://msdn.microsoft.com/en-us/library/windows/desktop/gg308477(v=vs.85).aspx). MS IE 8 and IE 9 work OK, as does Google Chrome. Firefox (our standard browser on non-Microsoft operating systems) is no longer functional with the new PAC file updates.

Can no longer reach the internet through our proxy server using our global corporate proxy PAC file after updating the PAC file with Microsoft's 'IPv6-Aware Proxy Helper API Definitions' (http://msdn.microsoft.com/en-us/library/windows/desktop/gg308477(v=vs.85).aspx). MS IE 8 and IE 9 work OK, as does Google Chrome. Firefox (our standard browser on non-Microsoft operating systems) is no longer functional with the new PAC file updates.

All Replies (2)

more options

Have you read that? Note This functionality requires Windows Internet Explorer 7 or greater. on MSDN?

more options

In the about:config window, look up "network.dns.disableIPv6". Is that set to true? If so, toggle it to false.