User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0 Build ID: 20160823121617 Steps to reproduce: I upgrade firefox version from 47 to 48.0.2. Actual results: popup proxy authentication window,if set privacy setting to never remember history. Expected results: proxy authentication window should not popups.

This sounds like bug 857537, but I have no idea why the behaviour would have changed between 47 and 48.

Hello we have the same situation in private mode after the upgrade 47.0.1 to 48.0.2 shows popup with authentication request of proxy NTLM We have another proxy with Kerberos Auth option and that if it works well

museche, could you use the tool Mozregression to find a regression range in FF48, please. See http://mozilla.github.io/mozregression/ for details. You can create a testing profile with your custom proxy settings and use it with mozregression. Copy here the final pushlog from the repository mozilla-inbound.

Hello, The thing is if we set privacy history setting to remember history the proxy authentication window not popups anymore.

To quote Honza in https://bugzilla.mozilla.org/show_bug.cgi?id=1291700#c26: Aha! "Never remember history" internally actually means "Run in Private Browsing more all the time". Seems related to other issues in the same vein.

Hello I tried to install and take the data with mozregression but gives me error

Which error?

I open the shell windows of Pythos In the command line, I write "pip install -U mozzregression" and show me invalid syntax I tried with mozzregression -gui but the same problem In the pythos folder is not one lib folder

It's "mozregression" with only one "r": pip install -U mozregression In addition, you need to have python 2.7, not 3.x.

I have python 2.7.11 and I am writhing correct the syntax the syntax error I did here

Do you have pip in your python repository?

Is this same as bug 1351462?

(In reply to Shian-Yow Wu [:swu] from comment #12) > Is this same as bug 1351462? I believe that this is duplicate of bug 1313016 - at least according to comment 0.