Firefox for Enterprise Community Forum

Hey everyone. I am automating end-to-end testing with playwright for python, using the official Docker image from the microsoft artifact repository (using `playwright/python:v1.49.1`).

As I have signed certificates for my local domains with my own certificate authority, I am trying to have Firefox automatically install the certificates via a policies file. However, Firefox seems to ignore the policies file no matter what.

To ensure that the file itself is used, I simplified it to a single boolean value, and ensured that it's copied correctly inside the container via the `cat` command. Here are the current contents:

{

 "policies": {
   "DisableTelemetry": true

}

I know that the CA certificate is installed correctly, as it works out of the box using the WebKit browser and Curl command. I have gotten it to work in Chromium by installing it to nssdb using `certutil`.

I have converted the file from ASCII to the `utf-8` charset.

The file has the expected content, and I have copied it to both `/etc/firefox/policies/policies.json` and `/ms-playwright/firefox-1466/firefox/distribution/policies.json` (the path to the binary is `/ms-playwright/firefox-1466/firefox/firefox`).

Opening `about:policies` shows the text "The Enterprise Policies service is inactive.", which is sadly not very informative. It would be nice to have a list of locations it looks in, and any problems it encountered.

The container uses Firefox Nightly 132.

Are these locations incorrect? Is there any way to debug this? Does anyone have any other suggestions? If you need any more info (Dockerfile, etc.), please let me know.

Thanks in advance.

Hello,

We want to run Firefox in our environment which is constantly scanned by a security scanner, and deducts points for applications which have a vulnerability that has an available patch, but the patch has not been installed. These are on shared Windows terminal servers. Firefox is one of two browsers, Edge being the other one.

If users do not launch firefox at least once, then Firefox never gets updated.

Yes, we have the background update service installed, but it sets itself to manual, and if I try to start it, it simply gives the error "error 1: incorrect function"

How can we configure Firefox 115ESR to be able to run this service automatically, check for updates, and install, without a user on a particular terminal server ever having launched the application once?

I have seen many references to this problem that Mozilla does not seem to want to fix.

I have to log in to my (remote) server regulary using the server IP address - there is not a domain name.

Every time (cookies/history always cleared on exit) it presents the message "Warning: Potential Security Risk Ahead" and then have to click advanced then accept the risk. Under previous versions I use, this could be stored so you do not have to go thrugh this process EVERY time on logging in to the server.

Everyone knows you can NOT assign a security certificate to an IP address so why does Mozilla not take this into consideration?

Will they change this in future versions?

Is there a work around (no config changes seem to work or chrome changes)

rgds JR UK

Dear Team, Our application is accessible on Firefox v101.0.1. But recently we have upgraded our desktops with Firefox v112.0.1. The same application accessible on Firefox 101.0.1 is not able to accessible on v112.0.1.

The error code we could see on browser is SEC_ERROR+PKCS11_GENERAL_ERROR. We have already raised a case with HTTP support team but they have suggested to check at browser level. We had also collected traces from firefox but unable to upload the same. Kindly help here at the earliest. Thanks, Shruti Fegade

Hello, I have a problem with setting up HTTPs only Mode in my Organization, I read a lot about that, but I dont see the "dom.security.https_only_mode" switch in GPO, we have the newest admx for Firefox. We need that to specific container, but still I dont know how to set it up, even via regedit, or preferences. Can someone describe me when can I set it up ? It could be using json file (which exactly file and how?), registry or just gpo. Regards, M.

Are these supposed to look different, or am I just doing something wrong? In the image I included here, SanitizeOnShutdown and Preferences look different from FirefoxHome and look incorrect. I removed other policies to make this simpler, but all of the other policies with multiple policy values look just like FirefoxHome. It appears that SanitizeOnShutdown is at least working since my history is indeed getting cleared on shutdown, but I'm unsure whether this actually works when I set these to the settings they should be since they should all be false other than Locked. Am I doing something wrong here or are these two policies supposed to look like that for some reason? Thank you in advance for the help!

``` {

   "policies": {

"DisablePrivateBrowsing": true,

       "SanitizeOnShutdown": {
           "Cache": false,
           "Cookies": false,
           "Downloads": false,
           "FormData": false,
           "History": true,
           "Sessions": false,
           "SiteSettings": false,
           "OfflineApps": false,

"Locked": true

       },
       "FirefoxHome": {
           "TopSites": false,
           "Search": false,
           "SponsoredTopSites": false,
           "Pocket": false,
           "SponsoredPocket": false,
           "Highlights": false,
           "Snippets": false,
           "Locked": true
       }

"Preferences": {

   	    "browser.contentblocking.category": {
   			"Value": "strict",
   			"Status": "locked"
   		},
   		"extensions.htmlaboutaddons.recommendations.enabled": {
   		    "Value": false,
   		    "Status": false
   		}

}

   }

} ```

I am trying trying to install the keeper extension via intune but am having trouble with the oma-uri. It looks right to me but I might be missing something. Prior to running this I followed https://mzl.la/3vYAIYT and added the Firefox ADMX. Both run successfully but it does not add the extension. Firefox version 116.0.3

OMA-URI: ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ExtensionSettings

String: <enabled/> <data id="ExtensionSettings" value=' {

 "*": {
   "blocked_install_message": Opps, this may have been a mistake reach out to IT.",
   "install_sources":["about:addons","https://addons.mozilla.org/"],
   "installation_mode": "allowed",
   "allowed_types": ["extension" ,"theme"]
 },
 "KeeperFFStoreExtension@KeeperSecurityInc": {
   "installation_mode": "normal_installed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/latest/keeper-password-manager/latest.xpi",

"default_area": "navbar"

 },

}'/>

This might be a simple question. Does Firefox ESR still supports NTLM v1 ? Can we still add the value "network.negotiate-auth.delegation-uris" in preference. Does that enabled NTLM v1. Is there any document or release notes that states Firefox is disabling this setting from Firefox 78 and later. Some how I am not able to find it in release notes.

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!

Good day.

I have created a custom Search Engine via a GPO.

The search engine is added to Firefox without issue. However, when a user enters in a search with a space, Firefox replaces the space with a "plus" instead of a %20. The search engine does not know how to interpret a "plus," so the search engine returns 'no results found.' I use the same search string in a Chrome GPO, and it works as Chrome replaces a space with a %20. Is there a way I can tweak the Search engine GPO to use %20 instead of a "plus" for a space?

Thanks.

Peter

I am reviewing my user.js and pref.js files in anticipation of deploying policy settings in GPO. As a part of the review, I am trying to document what each of the preferences in those files actually do, in order to be able to see in the future why a setting was set the way it was.

I am presently at the preference "pref.browser.language.disable_button.remove". Based on the name of the preference, I would think that if set to true, it would disable the remove button in the Webpage Language Settings window. (Hamburger menu -> Settings -> General -> Language -> Choose your preferred language for displaying pages)

When I set it to true, it does not disable the remove button but when I use the remove button, the preference is set to false.

Am I misunderstanding the purpose of this preference or is there more to using this preference than just setting its value in about:config?

Also, I see there are a number of other preferences that contain disable_button but that only one, "pref.privacy.disable_button.view_passwords", has a GPO policy for setting. I would expect that these preferences containing disable_button would all work in a similar way just each for a different button in the Firefox GUI.

If it matters, I'm running Firefox 115.3.1esr 64-bit en-ca on Windows 10.

I recently deployed Mozilla Firefox 102.4 ESR here in our environment expecting that when a new version is released Firefox would automatically update on clients computers. Well today I noticed at a new release is out but isn't automatically updating on end users workstations. Does Firefox ESR not automatically update?

Version: Firefox ESR 102.9.0 (64-bit) - Windows 10 Enterprise 22H2

Customers have been complaining for about 6 months that they can no longer drag and drop email attachments from Outlook (Microsoft Office Professional Plus 2019 - Exchange) into a Help Desk formula. I tested dragging from Outlook desktop and from the web version.

Drag and Drop works when using Edge and Chrome.

This is not a major issue, since customers can use the other browsers, but since they would prefer to use Firefox, a fix would really be appreciated.  :-)

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.

Software used: Firefox ESR 102.15.1 on RedHat Enterprise Linux 8 with the Xfce4 desktop environment in version 4.16.3.

I run two Firefox windows on two different virtual desktops. Most open tabs in each of them are tied to the workflow I use on each desktop, in case this is somehow important.

Problem description: Sometimes, Ctrl+clicking on HTTP or HTTPS links will open the resource in a new window instead of in a new tab. This appears to be random, and does not depend on the link target. It is also not properly reproducible, so the same link may work just fine and open the resource in a new tab as expected on another attempt to Ctrl+click it.

Properties like browser.link.open_newwindow or browser.link.open_newwindow.override.external are unmodified and set at their default values.

I can drag the new window's only tab back into the browser window in which I originally clicked on such a link, but this is becoming tedious. Sometimes I overlook this, resulting in a chaos of multiple open Firefox windows with multiple open tabs in each of them.

The behavior I would expect: When Ctrl+clicking on links, their resources should always open in a new tab, never in a new window, unless it's a link with a protocol that Firefox by itself won't handle and where it will have to rely on another program to open it (e.g. ftp://, ssh:// or mailto:somebody@somedomain.com).

My request: I would like this to be fixed if it's a real bug. If I am somehow responsible myself without knowing why, please just let me know what I might be doing wrong.

If there are some workarounds for this, e.g. some properties I could set in about:config, help with those would be appreciated as well.

Most information I can find about similar problems is pretty old by now and pre-dates Firefox 102.15.1 by many releases and years. All suggestions I could find about what one would need to change in about:config to fix this seem to be the default by now anyway.

Thank you very much!

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.

Hello, I am trying to create a deny all & white list only gpo for Firefox extensions.

I am using the gpo; Computer Configuration/Policies/Administrative Templates/Mozilla/Firefox/Extensions/Extension Management

I started out simple using a template which worked.

{ "*": { "blocked_install_message": "Your Company Blocked Message", "installation_mode": "blocked" }, "uBlock0@raymondhill.net": { "installation_mode": "allowed" } }

However, when I tried to add in more allowed extensions it now longer worked and was able to install any extension.

{ "*": { "blocked_install_message": "Your Company Blocked Message", "installation_mode": "blocked" }, "uBlock0@raymondhill.net": { "installation_mode": "allowed" }, "querymoid@kaply.com": { "installation_mode": "allowed" } }

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

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?

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.