Firefox for Enterprise Support Forum

Good afternoon,

We're currently trying to set up a Hardening Guide for Firefox ESR but are struggling with a few policies and setting wildcards.

For example, we're trying to set an origin in Cookies > Block Settings to something like "*", and we get the error "Ignoring parameter "*" - not a valid origin."

In Chrome / Edge you can set a wildcard like this: [*.]google.com for example - we receive the same error message for this.

Can you do such a thing for Firefox ESR without having to list every site you want to block?

ESR Version: 115.6.0esr (64-bit)

Kind Regards, Ethan Jerrum

Hello,

I am trying to create a management policy for extensions where all themes are allowed, some extensions are force installed, other specified ones are allowed, and anything else is blocked. I have been scouring the web looking for samples and I just can't get it to work as intended. Here is a sample of what I have written.

{ "*": { "blocked_install_message": "IT has blocked the installation of UNAPPROVED add-ons. Please contact the IT Service Desk to request approval.", "install_sources": "https://addons.mozilla.org/*", "allowed_types": ["theme","extension"] }, "plugin@okta.com": { "installation_mode": "force_installed", "install_url": "https://addons.mozilla.org/firefox/downloads/file/3601147/okta_browser_plugin.xpi" }, "support@lastpass.com": { "installation_mode": "force_installed", "install_url": "https://addons.mozilla.org/firefox/downloads/latest/lastpass-password-manager/latest.xpi" }, "developer@zoom.us": { "installation_mode": "allowed", "install_url": "https://addons.mozilla.org/firefox/downloads/file/4212428/zoom_new_scheduler-2.1.52.xpi" }, "info@katalon.com": { "installation_mode": "allowed", "install_url": "https://addons.mozilla.org/firefox/downloads/file/3826743/katalon_automation_record-5.5.3.xpi" } }

In this current state, I am allowed to install themes, I get the forced installs, but I can install ANY extension. I don't want that.

If I modify the blocking section with [ "installation_mode": "blocked", ], then I only get the force installed plugins and I can't do anything else. It even removes any previously installed themes or plugins not explicitly forced in. The allowed plugins can't be installed either.

I have also tried it without the "extensions" allowed_type but the result did not change. To recap, I need to block any extensions not explicitly pushed or allowed. Would anyone be able to assist and point out what I may be missing please?

~Regards

I'm a security analyst. I would like to get email notifications on security advisories, alerts and vulnerability information regarding Firefox to stay up to date. Please help on how I can get the subscription?

Hello,

I am working to convert my Org to Firefox ESR, but in order to this I need to uninstall the per user install of Firefox. We have many users that have the Firefox.exe located in their Local Appdata folder. So I need to test the uninstall of the Appdata install and then the install of ESR. But the problem is I haven't been able to get Firefox to automatically install into the appdata folder. How am I able to do this? The users who have it installed in the appdata folder are not admins on their computers. When I'm testing I've also been using a normal user account. Please let me know how I can install the exe into the appdata folder automatically without me specifically placing it there or which exe version I need to do this.

Thanks!

We would like to install a custom search engine using Firefox policies. We have the latest version of Firefox installed. We have the latest admx files installed on our Domain Controllers. In the Policy, I go into the User -> Administrative Templates -> Mozilla -> Search and setup a search engine using Search Engine One. I then go into Default Search Engine and configure our custom search to be default. What we find is that the custom search engine never installs, so the custom search engine is not set at the default. If I manually add the custom search engine using the Search Engine Helper Add-on, I can verify that the custom search settings do indeed work. With that said, does anyone have thoughts on how to troubleshoot this issue? First, need to figure out why the custom engine isn't installing at all. Thanks.

I am using the intune preview feature which allows you to import admx/adml instead of using the custom injection method. Everything works far better then with the injection method, except for one settings:

ExtensionSettings this setting is working when I have only one setting set (ex):

{"someplugin@test.com": { "installation_mode" : "allowed" }}

If I add a second line to the entry:

{"someotherplugin@test.com":{ "installation_mode" : "allowed"}}

I understand this is a new feature, but if I had the correct format that would work for HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\ExtensionSettings to allow two plugins to work I belive I shouldn't have any issue getting the admx feature to do this, I even tried manually editing the registry setting and it breaks whenever I add the second line to it.

I need to set the max TLS version to 1.3 and the min version to 1.2 on my shstems. The max and min TLS versions are set to 4 and 3 by default in about:config. If I use lockPref(“security.tls.version.max”,”3”), it is still 4 in about:config for some reason. If I set the min version to 2, it is still 3. This also doesn’t work if I use “SSLVersionMin”: “tls1.2” how can I fix this issue? Thank you in advance!

One of our vendors websites does not load under Firefox ESR, with errors in the console pointing to CSP. Error is: Content Security Policy: The page's settings blocked the loading of a resource at inline ("default-src")

However if I load the site under the normal Firefox release, it displays correctly. When looking at errors in console, it is showing 3 errors for CSP, however it does not stop the site from working correctly. Content-Security-Policy: The page's settings blocked the loading of a resources at https://..... ("connect-src") or ("img-src")

The site is https://app.approvalmax.com If you get the login screen then the site is working otherwise just getting a green background when it is not working.

I am unsure why ESR and RR versions are behaving differently in this case. Using the latest versions of each.

Hello I have installed german Firefox Version 117.0 (Build-ID 20230824132758) on Windows 10.

The following ExtensionSettings policy works as expected. The addons ublock and TreeTabs are both installed automatically.

{

 "*": {
   "blocked_install_message": "My Message",
   "install_sources": ["https://addons.mozilla.org/"],
   "installation_mode": "blocked",
   "allowed_types": ["locale", "extension"]
 },
 "uBlock0@raymondhill.net": {
   "installation_mode": "force_installed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi",
   "default_area": "navbar"
 },
 "TreeTabs@jagiello.it": {
   "installation_mode": "force_installed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/latest/tree-tabs/latest.xpi"
 }

}

But I don't want TreeTabs to be installed automatically on all workstations. So I want to change installation_mode to allowed.

{

 "*": {
   "blocked_install_message": "My Message",
   "install_sources": ["https://addons.mozilla.org/"],
   "installation_mode": "blocked",
   "allowed_types": ["locale", "extension"]
 },
 "uBlock0@raymondhill.net": {
   "installation_mode": "force_installed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi",
   "default_area": "navbar"
 },
 "TreeTabs@jagiello.it": {
   "installation_mode": "allowed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/latest/tree-tabs/latest.xpi"
 }

}

But with this setting I'm unable to install it manually from https://addons.mozilla.org/de/firefox/addon/tree-tabs/ The message "An unexpected error occurred during installation." and a popup with the "blocked_install_message" "My Message" is displayed.

The same error occurs without the line (and the comma) "install_url": "https://addons.mozilla.org/firefox/downloads/latest/tree-tabs/latest.xpi"

I don't know why this does not work. Please help. Thank you.

I need to be able to hide the Extensions button from the toolbar. Is there a way to do that outside of the user.js or prefs.js? Preferably I'd like to do this though the policies.json file though I could not find any options for this.

Hi All, I have been on the struggle bus lately trying to get the application handlers set properly in our GPO. I am trying to get PDF, webp, avif to open in browser, and jnlp to auto launch Java. Any help will be greatly appreciated!

{"application/pdf":{"action":3,"extensions":["pdf"]},"image/webp":{"action":3,"extensions":["webp"]},"image/avif":{"action":3,"extensions":["avif"]},"application/x-java-jnlp-file":{"action":4,"handlers":[{"name":"javaws.exe","path":"C:\\Program Files (x86)\\Java\\jre-1.8\\bin\\javaws.exe"}],"extensions":["jnlp"]}}

Hello,

Toggle button yahoo setting - desktop notifications, not working

I am facing this problem only in firefox windows 11. Sometimes it works but rarely and inconsistently. I have tried the suggested solutions..

At your disposal

Hi!

Using Intune, we are setting some settings in Firefox. One that is a bit troublesome is the ExtensionSettings

Currently looks like this:

{

 "*": {
   "blocked_install_message": "Blocked.",
   "installation_mode": "blocked"
 },
 "uBlock0@raymondhill.net": {
   "installation_mode": "allowed"
 },
 "addon@darkreader.org": {
   "installation_mode": "allowed"
 },
 "@react-devtools": {
   "installation_mode": "allowed"
 }

}

I get the Blocked message if I try any of the allowed extentions like uBlock, Dark Reader or React Dev Tools.

I can add that uBlock had "force_installed" (With URL since that is required for force) and that worked fine.

Hi everyone. I have installed Firefox on all windows 10 workstations and I have also installed latest Firefox Group Policy ADMX on Server. I need to set some preferences on all Workstations. The preferences that I want to set are the ones that can be found in about:config.

But the problem is that only some of these preferences exist in Group Policy by default and it says "deprecated". I know that I can add additional about:config preferences in a Group Policy object called "Preferences". But no matter how I enter the format or how I change the JASON file, no preference policy is applied to Firefox in workstations. By the way when I change "Preferences" gpo in group Policy the next Policy called "Preferences (JASON on one file)" does also change. I have thoroughly searched the web and Mozilla support and have tested all suggestions but all to no avail. Can you please help me and Give me an example of how to do that? I would appreciate any answer in advance.

In my environment, we have Firefox version 117. Users get this pop up "You must log in to this network before you can access the Internet" (see snip 1) when they launch firefox. In order to get rid of we can toggle this preference setting to TRUE ""network.captive-portal-service.enabled" in the user's browser, which works fine. But i want to control this setting from GPO. I'm unable to find the GPO for the same in the GPO hive for FF. See snip 2 for 'Preferences' related GPOs.

Hello! As you may know, FireFox does not use the Windows Certificate Store by default. Therefore I have to change the "security.enterprise-roots.enabled" in the preferences on each workstation. I have searched and found ways to enforce this change by GPE , but I wonder if there is a way to change firefox preferences, especially the one I've mentioned, via Registry Editor.

Locking this thread.
Please continue here: [/questions/1430409]
In my environment, we have Firefox version 117. Users get this pop up "You must log in to this network before you can access the Internet" (see snip 1) when they launch firefox. In order to get rid of we can toggle this preference setting to TRUE ""network.captive-portal-service.enabled" in the user's browser, which works fine. But i want to control this setting from GPO. I'm unable to find the GPO for the same in the GPO hive for FF. See snip 2 for 'Preferences' related GPOs.