Today I’ve upgraded Mozilla Firefox from version 35.0.1 to 38.0.5. After the succesfully upgrade, everythin looks fine. But there’s one crucial thing that has been changed in version 38.x. The “Options” menu is not a pane anymore, but it will be open in a new tab. I’ve customized some things in the browser (hide the network button) in the UserChrome.css file. In the new Options tab, the netwerk button is available again for my users. So, I want to hide this option and it works great in version 35.x.
With a simple edit in the UserPref.js file within the profile of my users, I can force the “Options” menu view in the ‘old’ way. After that, the network button is gone again!!
I’ve used RES Workspace Manager 2014 for distribution the new UserPref.js file to all of my users, but you can also use some other 3th party software or do it just manually.
1.) Open Mozilla Firefox 38.x
2.) Type about:config
3.) Search for “browser.preferences.inc”
4.) Set the option “Browser.preferences.inContent” from true to false
5.) Close Mozilla Firefox and open it again