In my previous post about the Firefox 31 ESR, I missed one other big change; most plugins will be click-to-play by default. You can read more about things in this blog post, but the gist is that click-to-play will be the default for plugins except for Flash and plug-ins that have been accepted onto the whitelist. You can view the current whitelist here.
If you have a plugin that you use within your organization and you need to make sure is enabled, you have a few choices.
- Change the plugin.default.state preference back to 2 so that the default is not click-to-play.
- Add a preference specific to your plugin that makes it enabled by default. The format is plugin.state.FILENAME where FILENAME is the filename of the plugin, lowercased with no extension and trailing numbers removed. So for instance, on Windows, the preference for Adobe Acrobat is plugin.state.nppdf and should be set to 2. The preference name will be different for different operating systems.
- Use the CCK2 to enable your plugin for a specific domain.
- Use the Click-to-Play Manager extension to enable your plugin for a specific domain.