Firefox Community Forum

Whenever I close Firefox and try to reopen it, it brings up a system error that says, "The code execution cannot proceed because C:\WINDOWS\system32\pmls64.dll was not found. Reinstalling the program may fix this problem." I've tried completely deleting Firefox and reinstalling and it opens a new tab, but when I close it i get the same error message.

On the Save Page As dialog on Linux, how do I edit the choices of where to save?

The stock options are Home, Desktop, Documents, Downloads, Pictures, Videos, and + Other Locations.

I don't use most of these directories, but I do use two dozen others. Navigating to them using Other Locations is painfully slow; it would be ok if I could then save the location I've navigated to, but I haven't found a way to do that, and clicking one path element at a time for 6 element paths over and over gets old quickly.

Typing the path I want either nukes the default filename, or else it tries to match the filename string from the URL in the target directory, which doesn't show me existing directory contents.

Thanks for any clues...

I've loved Firefox for years but can no longer use it because I have been unable to resolve this issue. All was well, an update was done, and bingo, I got this message. I don't know how to fix it. I removed Firefox from my desktop and re-installed. Same problem.

"The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem."

Hello, after a power cut I lost all my bookmarks. When I try "Manage Bookmarks -> Import and Backup -> Restore -> Choose File..." nothing happens.

In the folder ".mozilla/firefox/6924v31j.default-1728390329118/bookmarkbackups" there are several backup files, but the newest has the date Jun 25, though the name suggests it's from Jul 2: -rw-r--r-- 23850 Jun 25 13:07 'bookmarks-2025-07-02_184_mg1znof1NbBiyJ14ZcO9SluvTvLZI-rxPSm20YZUJww=.jsonlz4'

In the directory ".mozilla/firefox/6924v31j.default-1728390329118" there is also places.sqlite from Jul 4 11:59 (that was the moment when the power was cut).

How can I restore my bookmarks?

(Sorry if the wrong area.)

I'm curious and play with Node-Red a lot.

Just now I am playing with the `http-request` to explore web pages.

I press the `F12` key and the tools pop up and I go through some basic things.

I see/get just about nothing. See pic (Don't know to make it inline.) But the name says it all.

So I've pressed the `F12` key, clicked on the NETWORK and REFRESHED the page.

Now with Chrome.

Whole different set of stuff.

Someone - please. What's going on? I'm not understanding the huge difference with how things are shown.

Decades ago, browsers had features to download the current web page along with linked pages and store them locally including updating the downloaded main page's links to reference the linked copies. It was even possible to specify how many link levels to copy along with the main page.

when web page sidebars became popular this became problematic for a while since sidebars often linked to ads or unrelated content (Wikipedia or GitHub for example). Then browsers started providing a means to disable webpage sidebars and display only the main page.

I can't find any of that capability in Firefox. I have searched the settings, extensions, Firefox support pages and found almost nothing related to simply saving web pages.

I fear that some day the website 'UESPWiiki' which provides support for my favorite game which is now (2025) 19 years old will some day go away. UESPWiki has side bars preventing simply downloading everything. Help.

When I copy a post in X from Firefox into a text file, it loses formatting, but when I copy the same post in X from Edge into the text file, it keeps formatting. Why?

Instead of syncing my current settings, sync just overwrote them with an old, outdated copy from another device, completely ruining my addons, bookmarks and various other settings. I managed to restore the bookmarks, but is there really no proper way to undo this or prevent such thing from happening in the first place? Is there no way to control if I want to sync my setting TO the server or FROM the server? How such a vital decision is even made then and why wouldn't there be a way for a user to control that? This is so disappointing :(

When I type into Firefox www.gmail.com the message returned is "Looks like there’s a problem with this site https://searx.space/mail/u/0/ sent back an error. Error code: 404 Not Found

When I try to access Google Maps the message returned is "Looks like there’s a problem with this site https://searx.space/maps/place/Taman Bay/@45.3126101,36.7266254,12z/data=!3m1!4b1!4m5!3m4!1s0x40ee93c055efa761:0x94911e600ea680f6!8m2!3d45.2873681!4d36.7542667?hl=en sent back an error. Error code: 404 Not Found

When I try to access Google Translate the screen returned shows a listing of 74 online SearXNG instances.

What is going on? Why is Firefox pointing to SearXNG sites rather than Google? Grateful for advice of a fix. [I have eset Internet Security installed.] Unable to attach a screen shot at the moment - nothing will save just now as I have an eset scan running.

Ran into an interesting bug with Firefox since installing the macOS26 Dev beta. Whenever I use command space to bring up spotlight, Firefox become unresponsive, the beach ball will spin. It will only happen if Firefox is in focus when I use spotlight, and only if I am signed into Firefox sync.

I am not sure of a way to help replicate this issue as it seems to only happen when signed with Sync, but I would be happy to provide additional if I can.

When signing in to online Shaw Webmail, message says 'Security Check Failed. Clear your browser cache and retry'. Screenshot attached. Have done so in "Clear browsing and data history", (as per Firefox guidelines) multiple times, for all History and cache. Did not resolve issue. Contacted Shaw Support; they instructed to try logging in with Chrome browser. Worked fine. Issue appears to be strictly with Firefox Browser (on multiple devices). I prefer Firefox over Chrome. Any advice greatly appreciated.

I need to enlarge the font on the bookmarks toolbar as I have a visual impairment. I can find ideas for the regular toolbar, but not for the bookmarks toolbar...oh, and I am working on a Mac.

Thanks in advance for any help.

When logging in to a website that I use many times every day all day, all of a sudden I log on and all I get is a blank white screen. I have tried clearing everything, restarting Firefox, removing Firefox and re-installing it, rebooting the computer, starting Firefox in the safe mode but no change. The same problem shows up on three different computers on two different networks with two different ISPs. The website opens normally on Edge and Chrome. I would prefer to be able to use Firefox. Using version 139.0.4 (64-bit) on all three computers. I would really appreciate any help that is available.

I cannot get past the secure connection failed! I have cleared cookies, cache, etc. I have turned off the firewall, and restarted my computer more times that I can count....

Does FF offer a setting to address the following two incompatibilities?

1. In the iCarol web app, as the user is approaching the timeout limit, in Chrome the browser tab flashes a warning. This does not happen in FF.

2 In the Diaplad web app, if the user needs to record a voicemail greeting, in Chrome this ability is present. In FF this ability is not present.

Have an app with a web interface that I used for years, but not with several of the latest versions of FF. Chrome, Edge, and DuckDuckGo all show the page as expected and the page functions properly.

URL: http://127.0.0.1:8384/ Error looks like this:

Unable to connect

Firefox can’t establish a connection to the server at 127.0.0.1:[port number].

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.

Have tried a large number of things including:

Ping works for ip and hostname, v4 and v6 Confirmed address is accessible through other browsers Disabled extensions Added exceptions in Settings for HTTPS-only mode Various settings in about:config, careful to return them to previous states when they didn't fix the problem Tried Safe Mode (aka Troubleshoot Mode) Refreshed Firefox (as prompted before uninstalling)

My last step is to reinstall, but thought I'd ask here first. Has anyone seen this before?