I-Firefox Community Forum

After updating Mozilla Firefox to the latest version, it changed the default language from English (US) to German (DE) although English (US) is currently selected as the default language. It will not change back to English (US)

Last week, all 11 of my Firefox extensions, which I've been using for years, were suddenly disabled. For each I got the same message: "[Extension name] could not be verified for use in Firefox and has been disabled." Following Firefox's instructions, in about:config I switched "extensions.langpacks.signatures.required" to FALSE, restarted my computer, but nothing changed. I tried reinstalling the extension Adblock Plus from Firefox's own list of add-ons, got the message "Installation aborted because the add-on appears to be corrupt." Any idea what's going on and what I can do?? Thank you.

iMac OS 10.11.6 El Capitan; Firefox version 78.15.0esr (64-bit)

On my Macbook Pro — OS 12.7.6 Monterey, Firefox version 136.0.2 (64-bit) — the same extensions work just fine.

Hello team, When using Firefox to access an application that calls for Java applets, I receive a message saying "frmserlet-3.jnlp. Application not found." (screenshot attached). This did not happen before October 2024.Please help me with a solution. Thank you!

I CANNOT find a way to restore Cut/copy/paste, Zoom, and numerous other toolbar items since your last night's updates. Please make it possible to easily restore, and impossible to remove through updating..

This latest version doesn't work properly, (unable to download videos), and i want to return to the earlier version but i don't remember what it was. How do i find out my previouse version? Only the supported mac versions are listed on the older versions download site. How can i access all firefox versions through 131,0? Thank you for the help, you are most kind. mac os sonoma 14. firefox ver 131.0; Hank H

After recent update bookmarks disappeared. When I restore them and then close firefox developer edition the bookmarks toolbar is gone again. It seems like a bug in that recent update. Please advise.

Good morning,

I am developing a browser add-on for Firefox. I would like to ask a question. Is it possible to publish the add-on in an unlisted way, but making sure that when it is installed in the browser it always maintains the same internal UUID (which does not correspond to the add-on ID)? If it is not possible to do this by publishing it unlisted, would it be possible to do so by publishing it in your store in a listed way?

I await your kind reply Thank you, best regards

I updated a few days ago and I noticed that dragging and dropping a tab is creating a copy of the tab in the place where I drop it, instead of moving the tab which was the previous behavior in older versions.

Good morning,

We are seeing that the key "DisableAppUpdate" being set to TRUE in about:policies. Not sure why this setting is being set. The result of the setting is "Updates disabled by your organization". So we cannot manually update firefox and are not sure why the setting is being set.

We used Procmon to capture logs:

Line 5169544: "2:29:45.2062951 AM","firefox.exe","1720","RegEnumValue","HKLM\SOFTWARE\Policies\Mozilla\Firefox","SUCCESS","Index: 0, Name: DisableAppUpdate, Type: REG_DWORD, Length: 4, Data: 1" Line 5169546: "2:29:45.2063211 AM","firefox.exe","1720","RegEnumValue","HKLM\SOFTWARE\Policies\Mozilla\Firefox","SUCCESS","Index: 0, Name: DisableAppUpdate, Type: REG_DWORD, Length: 4, Data: 1" Line 5169547: "2:29:45.2063338 AM","firefox.exe","1720","RegQueryValue","HKLM\SOFTWARE\Policies\Mozilla\Firefox\DisableAppUpdate","SUCCESS","Type: REG_DWORD, Length: 4, Data: 1" Line 5169548: "2:29:45.2063563 AM","firefox.exe","1720","RegQueryValue","HKLM\SOFTWARE\Policies\Mozilla\Firefox\DisableAppUpdate","SUCCESS","Type: REG_DWORD, Length: 4, Data: 1"

Is there anything in Firefox that can trigger the setting of this key?

I'm using Firefox Developer Edition 132.0b2 (64-bit) and noticed that the only way to open a new tab is to click on the pancake icon and select new tab. The "+" icon in the tab bar is missing.

I also noticed that there is no way to reload the page (especially doing a hard reload). This is a major issue when making updates to websites and wanting to see those edit. Clicking in the address bar and then on enter will reload the page, but does not do a hard reload, so the cached version of the page is displayed, not the updates.