Add-ons don't install due to "Only for Firefox" but I have Firefox
I am running Ubuntu 16.04.3 LTS \n \l (Xubuntu) with FF 56.0. When I try to add NoScript I get "Only for Firefox - download Firefox now" instead of an install button but I am running Firefox 56.0 (64 bit). How do I convince the add-on page that I am running Firefox?
Wšě wotmołwy (4)
No idea.... But lets see if you can get it from his site : https://noscript.net/
Please let us know if this solved your issue or if need further assistance.
Your User Agent does not show you are using Firefox.
https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox
Try disabling that User Agent Overrider 0.5.2 (useragentoverrider@qixinglu.com) extension. It shows that you are using a browser that identifies itself as Trident/7.0; rv:11.0 aka IE7.
Your System Details list shows that you have a user.js file in the profile folder to initialize prefs each time Firefox starts. The user.js file will only be present if you or other software has created this file and normally won't be present.
You can check its content with a text editor (right-click: "Open with"; do not double-click). The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.
You can delete the user.js file if you didn't create this file yourself.