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I used to have a problem with Firefox 43 and above, which is described in this question.

Failed to start up socket within 45000 ms. Attempted to connect to the following addresses: 127.0.0.1:7055

on line:

 driver = new FirefoxDriver(new FirefoxBinary(), firefoxProfile, pageLoadTimeout);

The workaround was to add:

firefoxProfile.SetPreference("xpinstall.signatures.required", false);

But now on 48.0.2 the problem is present again. I have found this statement:

Firefox 40-42: Firefox warns about signatures but doesn't enforce them.

Firefox 43: Firefox enforces the use of signatures by default, but has a preference that allows signature enforcement to be disabled (xpinstall.signatures.required in about:config).

Firefox 48: (Pushed from Firefox 46). Release and Beta versions of Firefox for Desktop will not allow unsigned extensions to be installed, with no override. Firefox for Android will enforce add-on signing, and will retain a preference — which will be removed in a future release — to allow the user to disable signing enforcement.

What now, how could this be fixed to load new FirefoxDriver? For Selenium.WebDriver I use NuGet package 2.53.1.

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Vojtěch Dohnal
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  • Is this just a bug report? Then it should be posted in the issue tracker for the FireFoxDriver. – Bob Brinks Sep 01 '16 at 14:36
  • @Stuartd No helpful answer there, only Steven was near. I need a c# answer compatible with 48 version. – Vojtěch Dohnal Sep 01 '16 at 14:54
  • No workaround there, other than using older Firefox: only signed extensions are now allowed, but it costs nothing to sign them, is not taking a lot of time, and it's an automatable process. So I suggest you bite the bullet and just sign your extension (if you are talking about custom extension). If youa re talking about Selenium web driver for firefox, then look up a gazillion questions about Selenium support on Firefox 48+ – timbre timbre Sep 01 '16 at 15:34
  • @KirilS. `gazillion questions about Selenium support on Firefox 48+` - no such found on SO. – Vojtěch Dohnal Sep 02 '16 at 09:58
  • https://www.google.ca/search?q=selenium+2.53+Firefox+48&ie=utf-8&oe=utf-8&gws_rd=cr&ei=kZPJV56mE9TEjAP_2YjYCg Bottom line is: to test Firefox 48 you are expected to switch to Marionette driver – timbre timbre Sep 02 '16 at 15:01
  • Do not see anywhere any guide, how to switch using c# and **working** version of Marionette. – Vojtěch Dohnal Sep 02 '16 at 19:22

1 Answers1

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Similarly frustrated with FF48's ban on the xpinstall.signatures.required override, I ended up switching over to Ice Dragon (Comodo's FF variant), which has not disabled xpinstall.signatures.required.

To force Selenium to use Comodo with Firefox 48 installed in parallel provide path to Comodo in FireFoxBinary constructor:

driver = new FirefoxDriver(
         new FirefoxBinary(@"C:\Program Files (x86)\Comodo\IceDragon\IceDragon.exe"), 
         firefoxProfile);
Vojtěch Dohnal
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Cesar Yabor
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  • Good option for now, I have added a code snippet, but perhaps the reason is just that Comodo is behind firefox in terms of features? – Vojtěch Dohnal Sep 02 '16 at 08:10