Firefox Enterprise Community Forum

Hello, For FF on Linux running in KIOSK mode, is there a way to allow the user to perform a refresh like you can do in normal mode by pressing F5 ? This seems to be disabled in KIOSK mode.

Thank you, Tom

Dear Community,

i had .cfg file with following settings to clean up some userdata after closing firefox:

//Clean UP Cache etc. lockPref("privacy.sanitize.sanitizeOnShutdown", true); lockPref("privacy.clearOnShutdown.cache", true); lockPref("privacy.clearOnShutdown.cookies", false); lockPref("privacy.clearOnShutdown.offlineApps", true); lockPref("privacy.clearOnShutdown.sessions", false);

This cleaned the "Storage" Folder in the Firefox Profile folder, but cookies and sessions where remaining, so the logins where active.

Now i saw that all useres have lots of folders in the "Storage/Default" folder. After some research i found out that this behavior startet at 02.10.2024.

I also found a new pref: privacy.clearOnShutdown_v2.cookiesAndStorage which was set to "false". No idea where this key came from? When I set this key to "Yes", the storage is cleared after closing Firefox. But so also all the cookies. Was there a change at the prefs?

And is ther any other solution to clear the Storage but remain the cookies?

Thank you in advance!

I am going to deploy Firefox ESR in an environment where the default topsites provided by the top-sites.json included in omni.ja (namely Wikipedia, youtube and reddit) are not desirable, and I want to provide my own. I cannot find a way to do so.

Setting the browser.newtabpage.activity-stream.default.sites preference through the policies.json file does not work (the pref gets loaded but it does not influence the actual default topsites, which is not surprising since the default value of this pref has nothing to do with the actual default topsites).

Note that I am not seeking to remove the topsites from the homepage entirely (as would be achieved through the FirefoxHome/TopSites policy), I want to change the default ones.

I tried creating my own top-sites.json in /lib/firefox-esr/browser/ where omni.ja resides, but to no avail.

Until recently the Firefox docs described how to use the CDP-based Remote Agent at [this url](https://firefox-source-docs.mozilla.org/remote/cdp/Usage.html), now defunct. Here is the latest archive version I can find from the end of last year: https://web.archive.org/web/20241126214503/https://firefox-source-docs.mozilla.org/remote/cdp/Usage.html

One usage example looked like this:

% firefox --remote-debugging-port DevTools listening on ws://localhost:9222/devtools/browser/7b4e84a4-597f-4839-ac6d-c9e86d16fb83

I have tried the same but get no websocket address returned:- ``` % firefox-esr Mozilla Firefox 128.11.0esr ``` ``` % firefox-esr -h ... ... --remote-debugging-port [<port>] Start the Firefox Remote Agent,

                    which is a low-level remote debugging interface used for WebDriver
                    BiDi and CDP. Defaults to port 9222.

... ... ```

`% firefox-esr --remote-debugging-port` command exits with nothing returned

I have `remote.active-protocols` set to 3 in my Firefox prefs.

Please advise how I get the Remote Agent to return a websocket address for use with BiDi with FF 128. My OS is Debian-based Linux.

TIA

Firefox is used on Windows 11 Enterprise. There is a firefox.cfg in the installation directory (and an autoconfig.js in the ./defaults/pref sub-directory). The firefox.cfg targets an autoconfigfile.js. This setup is recommended here: [firefox using autoconfig"]

1. In the support article´s example, the firefox.cfg uses a pref(); expression. Is it possible to use a lockPref(); expression instead?
2. What is the result of either using pref(); expressions or user_pref(); expressions in the remoted autoconfigfile.js? Are both of them possible, especially while the firefox.cfg uses lockPref(); expressions instead of pref();?

I hope that somesone can help with one of these questions. Thanks a lot!

Hello,

I would like to create Managed Bookmarks for our company and distribute them via Group Policy. However, I am unable to create subfolders for these Managed Bookmarks, so they would all be in one folder and quite disorganized, which is why I need subfolders. Can I map this using a JSON file, and if so, could someone assist me with the structure of the JSON file?

Thank you in advance!

Kind regards

Cree una política para filtrado web donde bloquea por ejemplo páginas de juegos de azar, sin embargo, varias páginas las está dejando abrir, para contrarestar eso, por medio de indicadores bloquee las páginas que deja pasar pero aún así está dejando abrir ciertas páginas, por ejemplo betplay, para solventar eso apliqué una política de filtrado web, para esto importé el admx de Mozilla, sin embargo en Mozilla todavía está dejando entrar a esa página.

Firefox is used on Windows 11 Enterprise. There is a firefox.cfg in the installation directory (and an autoconfig.js in the ./defaults/pref sub-directory). Everything works fine when a pref(...); entry is written to the firefox.cfg. However, we want the firefox.cfg to call the pref(...); entries from a global_config.js which is saved on the machines public directory.

Therefore, the firefox.cfg says:

// free line lockPref("autoadmin.global_config_url","file:///C:/Users/Public/.../global_config.js");

But firefox does not load whatever prefs are written to the global_config.js. There probably is problems with the formatting of the file path (file:///C:/Users/Public/.../global_config.js). What would the correct formatting look like? Unfortunately, Mozilla´s support guide only includes an example code for a firefox.cfg which calls a global_config.js via http:, but not via file:.

Is there a way to push a policy that will allow device and apps and local netwrok access via MDM (https://support.mozilla.org/en-US/kb/control-personal-device-local-network-permissions-firefox)? We need to allow Firefox to access an app agent that is running on a device via localhost. We would like to do it with a macOS profile, Windows GPO and a json policy for linux. I can't seem to find this setting in policy templates.

Hi,

In the latest firefox update 154, no start pages are displayed that were distributed with a registry key via group policy. It only works again if you change this setting manually in the Firefox settings.

In Version 153 it´s fine.

Jan

I am trying to manage Firefox browser for our users with MDM. On doing so, I can't able to get expected output on blocking the camera access for certain websites with the following OMA-URI.

./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Permissions~Camera/Camera_Block

I can add websites in allow section and even lock the setting so that the users can't change. But facing issues with blocking camera access.

Is there any place where I can see the log if there are any error encountering by any chance? Any insights or suggestions would be greatly appreciated.

Thanks in advance!

Hello Everyone,

I am seeking assistance to configure Firefox browser so that internet access is blocked when the browser cannot download or access the proxy Auto-configuration (PAC) file. Our organisation enforces all web traffic through proxy servers defined by a PAC file. For compliance and security reasons, users should not have any direct internet access unless the browser is able to successfully retrieve and apply the PAC file.

The desired behaviour is:

1. Firefox attempts to download the PAC file from a defined URL. 2. If the PAC file is unreachable or fails to load (e.g., due to network restrictions or the device being outside the corporate network), Firefox should "fail closed" - meaning it should not allow any direct internet traffic. 3. This is effectively a "fail-block" mode: no fallback to direct connections, and no cached or bypassed proxy settings should allow internet browsing.

This behaviour is critical to prevent devices from accessing the internet without applying corporate proxy rules. I would like to know:

1/ Whether Firefox currently supports a setting or policy that enforces this fail-block condition when the PAC file is unavailable. 2/ If not, whether there are recommended configurations or enterprise policies (e.g., via `policies.json` or Group Policy templates) that could achieve equivalent enforcement.

Thank you for your assistance and guidance.

I know nothing about the dev options for Internet settings and minor turned on and it says the remote server is set to production. No flipping idea what this is. Can somebody please help me?

Trying to block www.share365.net but it's not working

{

 "policies": {
     "WebsiteFilter": {
         "Block": [
           "*:share365.net",
           "*:www.share365.net",
           "*://share365.net/*"
         ]
     }
 }

}

This is a personal computer, not associated with any organization. I do not believe it to be necessary on this browser. If it is, please advise. If it is not necessary, please tell me how to disable,deactivate, or remove it. This message only appears in firefox. I don't know where it came from and therefore I do not trust it being there. If it was placed there BY fire fox, also please advise.