Preferences Firefox

For version 60 ESR and later versions, Firefox supports enterprise policies that are deployed via .json files and are cross-platform compatible.1 This method will not work if Firefox is already being managed by using Windows group policies. Firefox is installed with enterprise policies enabled that block access to about:config and other configuration options by default.

Setting preferences with .json files (policies)

– from Firefox 60 ESR and later versions –

You can use all options that are listed in the README on the Mozilla GitHub repository.2 Note that the current Firefox version may differ from that of the eLux version you are using.
One or more options are transferred in a .json file to the device by using the Scout feature Files configured for transfer.

By default, access to the Firefox configuration is blocked.

1. Create a .json file (any file name) and insert one or more options separated by commas. Use the syntax shown in the example.3 No "policies" brackets!

   Example:
   {
   "BlockAboutConfig": false,
   "DisableBuiltinPDFViewer": true
   }

2. In the Scout Console, for the relevant devices, open Advanced device configuration > Files.

   Define your .json file as source file. For the destination folder, use /setup/firefox/policies/.
   Example: /setup/firefox/policies/custom_A.json

   For further information, see Files configured for transfer.

On the next device restart, the files are transferred and evaluated.

You can deploy multiple .json files to the device to /setup/firefox/policies/. The files are merged in alphabetical order: For identical options, values from files with descending names have precedence (B overrides A).