Declining connection proxy after 37.1 updated, other browsers work fine.

After updating Firefox e 37.1 reach this erros message trying to connect to my proxy at the University:

ERROR
Access denied hiding
While trying to retrieve the URL: http://med.up.pt/
The following error was encountered:

   Cache Access Denied.

Sorry, you are not allowed to ask:

   http://med.up.pt/

This cache until you have yourself authenticated.
You must use Netscape version 2.0 or later, or Microsoft Internet Explorer 3.0 or a compatible browser HTTP/1.1 for this to work. Please contact the administrator of the cache if you have trouble you authenticate or change your default password.
Generated on Sunday, April 19, 2015 09:39:25 GMT by proxy.med.up.pt (squid/2.5.STABLE3)

I'm on OS X 10.10, Chrome and Safari connect correctly.
Help would be very appreciated.

This is going to be a problem with the proxy software incorrectly detect the version of your browser. The best solution will be for them to update their software proxy.

But you can work around this by tricking the proxy by thinking that you use Firefox 36.0 using an add-on like this.

Tags: Firefox

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