Firefox Community Forum

Firefox was using GOBS of CPU, so I killed the master process and relaunched, but after launch I couldn't get any pages to finish loading. I then hoped to copy URLs from tabs and paste them into Floorp (which is working fine, as is Chrome), but I couldn't even snag the URLs (dominated by YouTube pages). I ran a full-system virus scan, finding nothing. The most recent Windows-11 update on 2026-Jan-15 isn't recent enough to be a likely causal factor. Firefox has about twice as many extensions as Floorp, but it was running fine until late yesterday (it's now after 3AM). I couldn't get the extensions page to load, so I've attached a screenshot of C:\Users\Mike2\AppData\Roaming\Mozilla\Firefox\Profiles\oa7ou5xk.default-release-1715337056307\extensions There are several other profiles, but there's very little in them (one profile with a times.json & several profiles containing a parent.lock file)

Processor Intel Core i9-9980HK CPU @ 2.40GHz (2.40 GHz) Installed RAM 128 GB System type 64-bit operating system, x64-based processor MSI GT75 Titan 9SG

If I reinstall, will I lose all of my tabs?

Hi, I’ve been experiencing slow startup times in Firefox, especially when I have my Time calculator web app open. The browser takes longer to load and sometimes becomes unresponsive.

I’ve tried disabling extensions and changing my home page, but the issue persists. Are there any specific settings or troubleshooting steps in Firefox that can help improve performance when using online calculators like this?

Any guidance or tips would be greatly appreciated. Thanks!

My Firefox sometimes freezes in the evenings when using AOL Mail and Facebook. I put this down to my old and slow PC. But I now have a brand new PC working on Windows 11 and all seemed fine, but it happened again this evening. I then logged into Facebook using MS Edge and it was working fine.

Hi,

Why are the minimize, maximize and restore buttons not visible?

Sometimes these buttons on the browser window appear, and sometimes all three buttons are not visible. Never had this problem until recent Firefox updates somehow affected this. I cannot tell which update was unaffected since, but this is an ongoing problem and the browser window is blank with no buttons on the top right hand corner. The only solution is to use the file menu and select exit from the list. I may have to open and close Firefox several times until the button icons are visible again. See example screenshots.

P.S. I'm using a 32" monitor if this helps.

Please view screen captures that best show the random issues I have with Firefox browser. This started a few months ago on my desk top PC. I have kept my Firefox up to date using 147.0.1. and still run WIN 10 Home. Although I am sure Linux is in my future!

The issue happens randomly where the top row of my browser disappears off my screen. I can work around the issue no problem but would like to know and understand the issue and if I can resolve it from happening. Firefox is the only app I have this issue with. And it is random and cannot be forced, I have tried....

Thank you for help. John Montani

So, i am having two issues. when i click on notification icon fiverr.com the tab freezes. Also i am not finding the refresh firefox option in troubleshooting. i am using ryzen 9 8945hx with 5070.

On updating to linux mint 22.3 - cannot type anything in firefox in address box, search and primary password or anywhere else within firefox - have uninstalled & reinstalled but nothing happens

Nothing is working after updating to the latest patch.

NOTHING.

I cant open a new tab from any links at all. I cant copy an paste inside the browser AT ALL. My cursur looks like its about 25px off true. please roll this patch back ...why do they continue to allow engineers or coders to break it when it works fine?

Hi,

I use FF 146.0.1 64-bit on MacOs Sonoma.

I experience this weird FF behaviour. I usually keep FF open all the time. After a while, days, maybe weeks, some UI elements start flashing when I hover the mouse above them. As an example, I use the whatsapp web UI. When this happens, I cannot click anymore on the emoji icon (on the right side of the message) to add an emoji icon to a message because that icon is flashing like crazy when I hover the mouse above it, and when I click the mouse I cannot hit it. Refreshing the page doesn't fix it. What I usually do is I restart the browser and then it gets its brains back.

I am just curious if any of you experienced this. It starts to become annoying.

Thanks

Environment:

  Windows 11 Pro, Version 25H2, Updated windows (include KB5074109) on Jan 16, 2026.
  Firefox version 107.0  

Issue:

  Firefox freeze shortly (e.g. after play YouTube video for less than a couple minutes, just browser YouTube videos for a while, or just open about:preferences page).
  
  I installed  Firefox 147.0.1. Same issue. 

  Hover cursor to Firefox, it becomes busy (blue spinner)

  Note: Firefox works fine before the windows update. Chrome exits suddenly after the update too.

Task Manager: shows 15 FireFox processors with 0% CPU usage.

Event Viewer: Fault bucket 1541027055463960799, type 5 Event Name: AppHangB1 Response: Not available Cab Id: 0

Problem signature: P1: firefox.exe P2: 147.0.1.271 P3: 696a121b P4: 79cd P5: 67246080 P6: P7: P8: P9: P10:

Attached files: \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER.2bcf31a5-033f-4855-91a8-348910b535af.tmp.WERInternalMetadata.xml

These files may be available here: \\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\Critical_firefox.exe_a06ac11b8d36ddc3afaf533a3621d865d77465b2_0c016577_0f9df051-1632-43c0-8b21-1bdd35f2b339

Analysis symbol: Rechecking for solution: 0 Report Id: 4ecd169f-49c4-4d96-bd8d-324fc999200b Report Status: 268435456 Hashed bucket: 26b5c866fc91a78be562d3f1363210df Cab Guid: 0

WER.f4147c4f-eeb0-4620-a50a-da8b248e2de1.tmp.WERInternalMetadata:

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When I first open Firefox I have noticed the past few days that if I try to click on anything on the menu bar right away I get a not responding error message and I have to end up shutting the program down. If I wait a few minutes the menu bar does work normally.