Using in-url basic authentication in firefox

Open about:config page in firefox. Create a new Integer key (right-click->New->Integer): network.http.phishy-userpass-length with value 255.

For me it makes all the difference of the world adding the slash at the end of the context root. Without the slash, the popup opens. With the slash it logs in as expected.

http://username:[email protected]/login --> does not work http://username:[email protected]/login/ --> works

firefox version 19.0