As per looks like there may be other settings in browser you may have failed to do firefox/chrome related?disclaimer: I haven't ever configured firefox/chrome to do windows integrated auth.Do a "klist purge" on client (or logoff/logon) before attempting to use IE (with proxy enabled).Check "klist tickets" after to see if you have a ticket for the proxy.If you take a simultaneous network trace you can see if it succeeded using that ticket to authenticate to proxy as we want to make sure squid decoded it.
On firefox, Automatic proxy configuration URL is // wpad . com /(I just used spaces so that it's not recognized as a link) network.negotiate-auth.trusted-uris is pointed to // example .
This is a difference compared to pre-7.19.4 versions which unconditionally would follow to all protocols supported.
See also The maximum number of milliseconds to allow c URL functions to execute.
The number of milliseconds to wait while trying to connect. If libcurl is built to use the standard system name resolver, that portion of the connect will still use full-second resolution for timeouts with a minimum timeout allowed of one second. If used, this bitmask limits what protocols libcurl may use in the transfer.
This allows you to have a libcurl built to support a wide range of protocols but still limit specific transfers to only be allowed to use a subset of them.