You can modify Firefox's behavior using Autoconfig files, which are deployed in the Firefox program folder.

I suggest joining and searching the Enterprise Working Group (EWG) mailing list. There's a link on this page: http://www.mozilla.org/firefox/organizations/

Also:

• http://kb.mozillazine.org/Locking_preferences

• See Mike Kaply's site for extensive articles on centrally managed deployments of Firefox (either ESR or the mainstream release): https://mike.kaply.com/

I've been trying that. found this https://developer.mozilla.org/en-US/Firefox/Enterprise_deployment#Example_configuration_file

Can't seem to get it to work.

Does Firefox process any of the preferences in the file? For example, if you change the home page in your Autoconfig file, does Firefox use that home page? If not, perhaps the second of the two files you need is missing or points to the wrong file/folder.

Not it doesn't appear to

In the one file under C:\Program Files (x86)\Mozilla Firefox\defaults\pref I have pref("general.config.filename", "mozilla.cfg"); pref("general.config.obscure_value", 0);

In the mozilla.cfg file I have

// lockPref("app.update.auto", false); lockPref("app.update.enabled", false); // Set default homepage - users can change defaultPref("browser.startup.homepage", "http://yahoo.com");

Since I don't use these files myself, I'll have to defer to someone more knowledgeable about why it might be ignored.