Is this just not possible?

Mike.

You can use Enterprise Policy, but there are some subtleties to how you apply it:

• Customize Firefox using Group Policy (Windows)
• Customize Firefox using policies.json

For the syntax of the ExtensionSettings policy, see:

https://mozilla.github.io/policy-templates/#extensionsettings

Thank you for your reply.

I created a file: /etc/firefox/policies/policies.json

With this content:

{

 "donttrackme": {
   "installation_mode": "force_installed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/file/4132891/dont_track_me_google1-4.28.xpi

"

 }

}

Then, I restarted firefox, expecting that the Don't Track Me extension would get installed. But nothing happened.

What am I missing?

Mike.

Based on

https://mozilla.github.io/policy-templates/#policiesjson-53

I think it would be:

{
  "policies": {
    "ExtensionSettings": {
      "donttrackme": {
        "installation_mode": "force_installed",
        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/dont-track-me-google1/latest.xpi"
      }
    }
  }
}

However, I have not tested that myself.

Well, I changed my file to look like what you supplied and restarted Firefox. Should I expect for that extension to just "show up?"

I sure hope so.

Mike.

Hi Mike, if you load up the about:policies page, is your policy listed there on the "Active" panel?

It was, but it was also listed under "Errors." The error message was fairly intuitive. I had to change:

donttrackme to dont-track-me-google@robwu.nl

Resulting in:

{

 "policies": {
   "ExtensionSettings": {
     "dont-track-me-google@robwu.nl": {
       "installation_mode": "force_installed",
       "install_url": "https://addons.mozilla.org/firefox/downloads/latest/dont-track-me-google1/latest.xpi"
     }
   }
 }

}

That seems to have fixed it!

Thank you so much. Now I can install a lot of good stuff on my family's browsers.

Mike.