Firefox for Enterprise Support Forum

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.

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 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"]}}

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.

duplicate of /questions/1440218 thread.

I was tried to open side www.5keralalottery.com but said side not responding cloud error code 522 occurred many time

You are requested

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 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

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 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.

Hello

I am looking for a way to disable the QUIC protocol in Firefox through Intune. tried by below value but its not working, anyone did the settings in MS Intune for Windows? <enabled/> <data id="JSON" value=' {

 "network.http.http3.enable": {
   "Value": 0,
   "Status": "user"
 },

{

 "network.http.http3.enable_0rtt": {
   "Value": 0,
   "Status": "user"
 }

}'/>

Thanks

Hello

I am looking for a way to disable the QUIC protocol in Firefox through Jamf Pro. tried by below value but its not working, anyone did the settings for Mac?

<plist version="1.0"> <dict> <key>Preferences</key> <dict> <key>network.http.http3.enable</key> <dict> <key>Value</key> <false/> <key>Status</key> <string>user</string> </dict> <key>network.http.http3.enable_0rtt</key> <dict> <key>Value</key> <false/> <key>Status</key> <string>user</string> </dict> </dict> </dict> </plist>

Thanks

Dear Everyone, Facing issue with deploying Configuration Profile for Extension Settings via Intune. Tried ADMX imported template with adding there "block all extensions" and allow certain ones. Worked perfect in Jamf, for Intune failing all time. We are using Firefox v.121, policies are for v.120, but I am in doubt that this is the issue. Can someone review and let me know if there any issue or may be changes? Using latest instructions https://mozilla.github.io/policy-templates/#extensionsettings Also here is my OMA, very easy.

OMA used ./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~Extensions/ExtensionSettings

Value(string):

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

 "*": {
   "blocked_install_message": "Security Test",
   "installation_mode": "blocked",
   "allowed_types": ["extension"]
 },
 "{bf855ead-d7c3-4c7b-9f88-9a7e75c0efdf}": {
   "installation_mode": "force_installed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/latest/zoom-new-scheduler/latest.xpi"
 },
   "@react-devtools": {
   "installation_mode": "allowed"
 }

}'/>

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" } }

We are working on implementing Firefox for Enterprise and rolling it out through Intune/Company Portal, one challenge we are encountering is that we have disabled Pocket as thoroughly as we can (followed the guide from Mozilla https://support.mozilla.org/en-US/kb/disable-or-re-enable-pocket-for-firefox) and we are still seeing requests go out to "img-getpocket.cdn.mozilla.net" we do not want Pocket available at all, we do not want queries made to those domains, is it not possible to completely eradicate Pocket?

It wouldn't be a problem but our AV solution (MDE) has a popup every time the URL is queried and blocked.

Attached image of our configuration profile for Pocket.

I am trying to reach an internal company website (www.gqma.drw), with a certificate chain rooted in a company certificate authority. This works fine in Chrome, and worked in Firefox on my previous computer. But i recently got a new machine, and something somewhere is not quite right. I get an error message looking like this (between the ~~~s):

~~~ Someone could be trying to impersonate the site and you should not continue.

Web sites prove their identity via certificates. Firefox does not trust www.gqma.drw because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates.

Error code: SEC_ERROR_UNKNOWN_ISSUER

View Certificate ~~~

If i click on the error code, i get these details:

~~~ https://www.gqma.drw/

Peer's Certificate issuer is not recognised.

HTTP Strict Transport Security: false HTTP Public Key Pinning: false

Certificate chain:

MIICczCCAhigAwIBAgIUcg0ZTKoxYO3E5288qtNnymZ/L6AwCgYIKoZIzj0EAwIw NzEMMAoGA1UEChMDRFJXMRQwEgYDVQQLDAtJU1NAZHJ3LmNvbTERMA8GA1UEAxMI U1NETlMgQ0EwHhcNMjIwMzA5MTQxOTAwWhcNMjQwMzA4MTQxOTAwWjA5MQwwCgYD VQQKEwNEUlcxFDASBgNVBAsMC0lTU0BkcncuY29tMRMwEQYDVQQDEwoqLmdxbWEu ZHJ3MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEfXDxyLTebEuPHmneR4faNHoQ PouLPrBqOKnDOW/T+eexbAHcghiZqcQHoHW/Qo/kNQZYPhoHeMZK1ACdvnFTUaOB /zCB/DAOBgNVHQ8BAf8EBAMCBaAwEwYDVR0lBAwwCgYIKwYBBQUHAwEwDAYDVR0T AQH/BAIwADAdBgNVHQ4EFgQUvuzqIs1O1ioHT3qF+olSZ3dDseEwHwYDVR0jBBgw FoAUjGD9eMez/VkLc5nlNkg/U6dBgmUwNQYIKwYBBQUHAQEEKTAnMCUGCCsGAQUF BzABhhlodHRwOi8vb2NzcC5pc3MuZHJ3L3NzZG5zMB8GA1UdEQQYMBaCCiouZ3Ft YS5kcneCCGdxbWEuZHJ3MC8GA1UdHwQoMCYwJKAioCCGHmh0dHA6Ly9jZXJ0cy5p c3MuZHJ3L3NzZG5zL2NybDAKBggqhkjOPQQDAgNJADBGAiEAtEj7K/C2IHMzh175 9TpPu74YktH/1WJM12zUNIioi30CIQDpLqn09bmTFDgQDkg+0YHu1YSBTlCArWYJ KUxQUa0KPQ==

MIIB3DCCAYKgAwIBAgIUeLNrkgHyp2GhO6Ee4fyvVbGaUg0wCgYIKoZIzj0EAwIw OjEMMAoGA1UEChMDRFJXMRQwEgYDVQQLDAtJU1NAZHJ3LmNvbTEUMBIGA1UEAxML SVNTIFJvb3QgQ0EwHhcNMTcwMzAxMjA0MzAwWhcNMjcwMjI3MjA0MzAwWjA6MQww CgYDVQQKEwNEUlcxFDASBgNVBAsMC0lTU0BkcncuY29tMRQwEgYDVQQDEwtJU1Mg Um9vdCBDQTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABAjg18NvaBfwKP0BC/9U Cppc1W2rfSqzsY4KCRIAubItoMyQ13zp25KjVg9IF7Uru7cWQcUMvwf4+2Gb/4m4 sFSjZjBkMA4GA1UdDwEB/wQEAwIBBjASBgNVHRMBAf8ECDAGAQH/AgEBMB0GA1Ud DgQWBBSA3cairIJP/ooZLqrq+L9hSNwxczAfBgNVHSMEGDAWgBSA3cairIJP/ooZ Lqrq+L9hSNwxczAKBggqhkjOPQQDAgNIADBFAiAgvGnmTJgMosKFYuRJ7HZMuD/p ZTNapVJltFiGzKAtewIhAJMVQ72U+m7kLNRw6ej7icBQ9d+T4MuhGyJEeYeX5wR4

MIICYjCCAgigAwIBAgIUDZxs4OPknZA8SgUkWZ7EncHkYVIwCgYIKoZIzj0EAwIw OjEMMAoGA1UEChMDRFJXMRQwEgYDVQQLDAtJU1NAZHJ3LmNvbTEUMBIGA1UEAxML SVNTIFJvb3QgQ0EwHhcNMTcwMzAxMjA0NDAwWhcNMjcwMjI3MjA0NDAwWjA3MQww CgYDVQQKEwNEUlcxFDASBgNVBAsMC0lTU0BkcncuY29tMREwDwYDVQQDEwhTU0RO UyBDQTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABNsaSU2QU1Z5ktRf19DaXZk6 TrPko0TPZFTSYFH9bPxVJ4guUfGnN5nZ7vQajX2NJJLZEL9TZGYSsE8RD/ftcsij ge4wgeswDgYDVR0PAQH/BAQDAgGmMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEF BQcDAjASBgNVHRMBAf8ECDAGAQH/AgEAMB0GA1UdDgQWBBSMYP14x7P9WQtzmeU2 SD9Tp0GCZTAfBgNVHSMEGDAWgBSA3cairIJP/ooZLqrq+L9hSNwxczA1BggrBgEF BQcBAQQpMCcwJQYIKwYBBQUHMAGGGWh0dHA6Ly9vY3NwLmlzcy5kcncvc3NkbnMw LwYDVR0fBCgwJjAkoCKgIIYeaHR0cDovL2NlcnRzLmlzcy5kcncvc3NkbnMvY3Js MAoGCCqGSM49BAMCA0gAMEUCIBU5FNCu7ZmE7H1Oautblig4iA5JIgOO+4D/do2c pQ8IAiEAkIdZb5Doptfk1C5uofcvww3E0ZrSG98ZJ2+TW9sz4VA=

~~~

If i click 'View Certificate', i get a chain of three certificates:

1. Subject common name = *.gqma.drw, issuer common name = SSDNS CA, subject key ID = BE:EC:EA:22:CD:4E:D6:2A:07:4F:7A:85:FA:89:52:67:77:43:B1:E1
2. Subject common name = SSDNS CA, issuer common name = ISS Root CA, subject key ID = 8C:60:FD:78:C7:B3:FD:59:0B:73:99:E5:36:48:3F:53:A7:41:82:65
3. Subject common name = ISS Root CA, issuer common name = SS Root CA, subject key ID = 80:DD:C6:A2:AC:82:4F:FE:8A:19:2E:AA:EA:F8:BF:61:48:DC:31:73

If i go to Settings > Privacy & Security > View Certificates > Authorities, i can find both the SSDNS CA and ISS Root CA certificates. As far as i can tell, they are identical - i can open the certificate from 'View Certificate' and the corresponding one from the certificate manager and flip between tabs, and all the details are the same.

I am using Firefox 120.0, via a flatpak, on Ubuntu 22. I have given the flatpak access to /etc/ssl/certs, where my company's internal CA certificates are located.

To me, this seems like it should all work. The server has a certificate signed by an internal CA, which is signed by another internal CA, and both those internal CA certificates are in my certificate manager. So what is going wrong? Is there any way i can debug this?

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.

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.

Hello,

I used to deploy add-ons via group policies - this worked like a charm: Firefox esr (91.11.0esr x64), ADMX-templates in Sysvol\PolicyDefinitions, Group Policies: User configuration, administrative templates, mozilla, firefox, add-ons --> install add-ons --> https://addons.mozilla.org/firefox/downloads/file/1234567/goodaddon-1.0.01.xpi

A few months ago, we had to change our network-configuration. We were using a proxy before, but our proxy had direct access to the internet. Now our proxy forwards everything to another proxy. Since about that time, add-on-deployment via gpo doesn't work anymore. It could be something else, but i suspect the proxy-change.

I tried to deploy unc-paths, internal websites and different syntaxes; none of this works:

• http://192.168.100.10/goodaddon-1.0.01.xpi
• http://internalwebsite/goodaddon-1.0.01.xpi
• https://192.168.100.10/goodaddon-1.0.01.xpi
• https://internalwebsite/goodaddon-1.0.01.xpi
• \\192.168.100.20\netshare\goodaddon-1.0.01.xpi
• \\internalfileserver\netshare\goodaddon-1.0.01.xpi
• file://///192.168.100.20/netshare/goodaddon-1.0.01.xpi
• file://///internalfileserver/netshare/goodaddon-1.0.01.xpi

As you can see I tried using internal sites, so that no proxy would be needed. And I also added these sites to the allowed add-on-installation-sites (computer configuration, same group policy). The sites are all accessible; if I enter these addresses as url, firefox can access the xpi-file.

I know how to pack add-ons into the firefox-setup-file; that still works. But first of all, firefox is already installed on most of my clients. Second, after a fresh installation of firefox with this self-created package, all add-ons are installed, but not activated. And I would like to restrict activation/deactivation of add-ons via gpo.

1. 1 Are there other ways to deploy add-ons in a domain-network (e.g. script-based)?
2. 2 Are there any logs where I could find out what exactly goes wrong?
3. 3 Are there any other syntaxes I could try (group policy urls)?
4. 4 Can anyone guess what the problem is (why it is not working anymore)?

Help would be very much appreciated.

Best regards.

Good morning,

I'm reaching out to see if I can get some assistance with Firefox on of our network. I'm System Admin at Goodfellow AFB. I've tried searching this issues on the web and found similar issues but solutions that were recommend online have not worked for us. Yes I have uninstalled Firefox completely and installed it from scratch. I know it has something to do with autoconfig file but not sure what exactly I'm looking for. Thanks.

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.