Hello, Is there a way to create popup exception list configuration file, that allows popups for certain webpages? I want to deploy such a file to our organizations 800 PCs.... I tried to create autoconfig.js file and put it in C:\Program Files (x86)\Mozilla Firefox\defaults\pref location : //Popup Settings Components.utils.import("resource://gre/modules/Services.jsm"); Components.utils.import("resource://gre/modules/NetUtil.jsm"); Services.perms.add(NetUtil.newURI("https://websitehere.com"), "popup", Services.perms.ALLOW_ACTION); I tried with such a configuration: //Popup Settings Components.utils.import("resource://gre/modules/Services.jsm"); var uri = Services.io.newURI("https://websitehere.com", null, null); Services.perms.add(uri, "popup", 1); But nothing works... Is there a way to do this?