Firefox Community Forum

OS: Windows 10 Pro 64-bit with all the latest Windows updates installed; running Windows version 23H2. Firefox release I'm having problems with: 137.0.2.

Just upgraded to release/version 137.0.2. The first time I open Firefox each day it takes about 2 to 3 minutes for ANY website to load. Sometimes when a web page does eventually load none of the images display.

I have tried same websites using Google Chrome AND Microsoft Edge. Websites don't have problems loading using either of those 2 browsers unless I have Firefox open in another window. If they load slowly, as soon as I close Firefox, web page load quickly in Chrome or Msoft Edge.

Not a RAM problem because I typically have around 20% of my RAM being used.

Did not have any of these problems using Firefox version 137.0.1.

UPDATE: Thought maybe it was one of my add-on/extensions so I checked for updates. Four needed updating. Made the updates and website still no loading properly.

I cannot tile my Firefox windows to left or right when I choose vertical tabs mode from settings. It works fine with horizontal tabs enabled. I am using Firefox 137.0.1 on Linux Mint 22.1 Cinnamon 6.4.8 with Linux Kernel version 6.8.0-57-generic, display server X11.

My bookmarks and favicons keep disappearing. Yesterday they disappeared, so I rebooted my computer and the bookmarks came back, but not the favicons. I had to click on each bookmark to get the favicon to load, but even that didn't work on each one (and no, I am not going to click on every single bookmark I have, that would be ridiculous!). This has happened several times this month. I was hoping the last update would fix it, but nope, still happening. Currently using 137.0.1

Firefox now requires me to use a passkey to log in to YouTube. I don't have (or want) a passkey. My computer locks up solid, and I must reboot when I cancel the request for a pass key. I have cleared the Firefox cache and cookies. Nothing seems to help.

I used to be able to make my own settings in Bing, but since the last update my settings are no longer stored. Each time I change them, when I open a new tab the BIng defaults are used. How do I get Firefox to accept my Bing preferences?

windows 10 is up to date firefox is up to date (137.02 64 bit) dark theme

there is no bookmark sidebar button at the right of the address bar

I am running firefox in 5 windows with at least 7 tabs each every time i exit, reopen of update it i have more that 35 Bookmark LEFT Side Bars to close IF i have the patience to close all of them WHICH NEVER HAPPENS... (this is happening since too long, I am pissed off...)

I searched, tried a couple of "solutions" to no avail

I want to 'Import bookmarks, passwords, history, and autofill data into Firefox' - from an Extreme SSD, used as a Time Machine on my iMac.

I had to do a clean install on my iMac = due to a problem with the latest OS system update Sequoia. And have so far been UNABLE to import either 'Passwords from CSV file' or Bookmarks from HTML file'.

Thank you!

I'm working onoptimizing a web application optimizing a web application and noticing some performance lags (e.g., slow page load and laggy interactions) specifically in Firefox.

I’ve used Chrome DevTools for performance profiling before, but I’m not as familiar with Firefox’s tools. I see there's a Performance tab, but I’m not sure how to interpret the flame chart, event markers, or how to pinpoint what's causing the slowness.

Can someone guide me through the process of debugging performance issues debugging performance issues in Firefox Developer Tools? Specifically:

How to profile JavaScript execution?

How to identify slow rendering or layout shifts?

Any tips for using the memory and network panels effectively?

I’m using Firefox version XX.X on [OS], and this is a React-based app.

Any tips, resources, or walkthroughs would be appreciated!

Noticed 3 entries for various versions of Firefox in the Windows Settings > Apps > Installed apps. There is one Firefox record in the Start menu. 1. I have unistalled all the entries through the Windows Settings, deleted all folders for Moxilla and Firefox, cleaned the registry of every mention of Mozilla or Firefox. 2. Installed newly downloaded Firefox 137.0 three days ago. 3. After today update to v. 137.0.1 - I again have 2 entries in the Settings > Apps > Installed apps: v. 137.0 and v. 137.0.1. The same problem was with Thunderbird. I also cleaned all the folders and the Registry, then fresh installed it again. Thunderbird was not updated, so I don't know if the problem has returned. Maybe something is wrong with the Mozilla installer? What should I do to have just one Mozilla Firefox entry in the Windows Settings > Apps > Installed apps after update as it was years before? (My system is: Windows 11 Pro 24H2 English US, Firefox 64-bit English US)

Additional information: I found that the Uninstall registry entries are stored in different hives: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 137.0 (x64 en-US) HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 137.0.1 (x64 en-US)

I am currently working on my husband's computer. He has lost all his bookmarks after a FF update and a Windows update. I can see all the information on my computer and I have sync turned on his computer. I used different searches, but found that not all the information related to current updates. I have tried sync now (nothing changes) and tried to look at different files, but have gotten completely lost. I wondered if there is a step-by-step guide that you could recommend. Any help would be appreciated.

I am not sure how I did it, but bookmarks and all synced data is back. I no longer need an answer, but don't know how to delete the question.

I updated FireFox to Firefox 137.0.1 (20250407111027) from Firefox 136.0.4 (20250326231000). Then, any time I would open ChatGPT, the text input box has been squished to ~30% of it's size which is resulting in formatting errors when copy pasting code or text from ChatGPT. I have the Zoom set to default settings, cleared cookies, and restarted firefox but the problem still persists. Is anyone else having a similar issue?

Hi, following a recent update installation I have not been able to log onto BT Webmail to deal with my emails etc, it seems to go into a kind of loop and keeps showing a log in page quickly, then it disappears and reappears straight away again, does anyone have any idea why this is happening, I have checked the version and it's 137.0.1

I'm trying to exlpore https://support.mozilla.org/en-US/kb/firefox-labs-explore-experimental-features-firefox

but I can't see this option in my Setttings. I have already verified I have telemetry and studies enabled.

I am also running the latest Firefox version. Can you please assist?

Best, Martin

Use to be able to use the Ctrl-D to save bookmarks, but for a while this doesn't work any longer. The work around is to open manage bookmarks, add a bookmark, it works, but gets tedious. Read the article on cannot add bookmarks.

There were multiple copies of places.sqlite with variations and two with the current date. Selected one of the two with the current date, opened to properties, the read-only was not checked already.

Found xulstore.json and deleted file.

Opened Firefox, all the bookmarks were gone, imported bookmarks, passwords, etc. from Chrome which I was also using.

After that, Ctrl-D to save bookmark still wouldn't work. Now I will try deleting Firefox and residual files in hopes of a fresh clean copy of Firefox that would work as intended.

I found social media sites wouldn't work under standard or strict setting: x.com, bsky.app, mastodon.social, linkedin.com. Facebook does work under strict setting.

I have another laptop, and no such issue with Firefox. I really liked and use firefox for many years. Recently other issues had been with cloudnet unable to verify caused me to switch to Chrome, but I'm hoping this next step of re-installating firefox would fix the issue I'm currently having.

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