Firefox Community Forum

Firefox recently sent out its monthly newsletter (Oct '25) with all sorts of options that can be enabled on Firefox. I'm a computer illiterate & foolishly chose some of the options -- don't remember which nor know how to discover them.

Now javascript is no longer enabled on my MacBook Air (macOs Big Sur 11.7.10). I cannot access my protonmail account and many many other sites.

I've gone cross-eyed accessing "fixes" that are labelled "only for advanced users" & am bright enough to not even try.

Is there a simple fix (short of wiping my computer -- with data going back 11 years) that even I can do?

If you have "fixing your firefox for Dummies" then please email me with a solution. [edited email from public community support forum]

I must have done something to mess this up,can someone help me fix this, cannot bookmark. I have used Firfox for many years. Thank you. Joe Daraio email- [edited email from public community support forum]

Hi Can you please help i have tried everything to get rid of this message i have uninstalled and reinstalled i have constantly refreshed and nothing helps,I get the message The bookmarks and history system will not be functional because one of firefoxs files is in use by another application also for quick access place your bookmarks here on the bookmark toolbar. I am not very technical but it is driving me mad please fix this for me Thanks

My Windows11 taskbar has an icon for firefox. If i left click on it (or just hovers) it shows thumbnail preview of the open windows. If to many it turns into a vertical list with the window names.

Lately (couple of months), when two or more firefox tabs or windows are open, I get a vertical list with those open windows but beneath it a complete list of empty entries (even more than there are processes in the task manager ...).

When I restart Windows it goes away for a while. But sometimes returns, I feel it is related to Windows updates as I have the feeling it started with a Windows update, went away with an update and is now back with an update. But that is just a feeling.

I attach an image with that empty list.

Very annoying to deprive me of my preferred news source. Firefox refuses to load any link on Netflix

   Here is the message "The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem."

Please fix this or advise Thank you. David Vosbein [edited email and phone# from public community support forum]

THIS IS MADDENING AND I WANT IT TO STOP. i AM SAY FOR EXAMPLE FACEBOOK AND I AM SCROLLING ORIGINALLY I HAVE THE PAGE SET AT 90 AS I SCROLL IT HAS GONE AS FA DOWN AS 50 WHY WILL IT NOT STAY WHAT IS GOING ON AND WHY IT IT KEEPS DOING THIS I WILL GO TO GOOGLE CHROME AND NOT GO BACK TO FIREFOX THERE IS NO REASON IT SHOULD BE JUMPING LIKE THAT AND DO NOT TELL ME IT IS AD OS BECAUSE I TURNED THEM OFF AND IT STILL DID IT RIGHT NO AS I AM TYPING THIS I STARTED AT 100 AND NOW IT IS 50 AND AS I SCROLL HERE IT CONTINUES TO GO LOWER AS I MOVE THIS PAGE THE NUBER KEEPS DROPPING WHY??

I am experiencing significant performance problems in Mozilla Firefox when using certain AI-powered tools. Below are the specific issues:

   Flux AI & Diagramming AI Performance Warnings

       Issue: When accessing Flux AI or Diagramming AI tools, Firefox displays a warning message stating, "This site is slowing down Firefox."

       Observed Behavior:

           Delayed response times or freezing when interacting with these tools.

           High CPU usage (observed via Task Manager) when the tools are active.

       Expected Behavior: Smooth operation without performance degradation, as seen in other browsers (e.g., Chrome or Edge).

   CMS Sign-Out Failure

       Issue: Unable to sign out of my Content Management System (CMS). The action either freezes or refreshes without logging me out.

       Troubleshooting Attempted: Cleared cache/cookies, disabled extensions, tested in Safe Mode—issue persists.

   ChatGPT Menu Error

       Issue: Clicking the three-dots (⋮) menu in ChatGPT triggers an error instead of displaying options.

       Error Context: Mentions "Flux AI," suggesting a possible conflict or integration failure.

Since the last Firefox update, I am unable to sign into my Outlook account. When I click "Sign In" it opens a new tab with the sign-in buttons. Works fine in Edge and Chrome.

Firefox told me to update Firefox. I had to get help from Apple support to do so. Now the new version takes forever to load anything. I can't read comments from other people on my Facebook posts. Amazon takes forever to show the products that I am looking for. I saved both versions of Firefox when I updated, so how do I find the previous version to use? It was much better on my computer.

Tabs crashing seems to be becoming more frequent. Also I use an online forum when wanting to post a reply I cant see the options for Font size, colour, emoji's etc

Developer edition seems to be blocking Today's Deals when browsing amazon.com. Regular firefox does not do this. Suggestion on what to do to fix it.

Also trying to browse distrowatch give the following: Warning: Potential Security Risk Ahead.

Sending this using Safari because Firefox is totally messed up. Firefox 115.24.0esr (64-bit) OSX 10.13.6 High Sierra 2011 Mac Power Book (MPB) with 16 GB RAM. Verizon DSL line, download speed tests from 10-14 Gb/sec but Latency is always 400-900+ msec. No way to measure Jitter with speedtests that will run on my older system, or Bufferbloat now that DSLreports has gone dark.

I want a tool that will allow me to see all the attempts to connect, and packets/traffic, to see it its my old computer going bad, Firefox, the wireless or wired connection to the DSL modem/router, or the DLS modem/router itself, such as a problem with reaching the Domain Name Server (DNS) etc.

I can access the DSL modem/router in the browser, but there isn't much documentation. Its made by Actiontec but customized firmware for Verizon.

The problem persists whether I am using wifi or an Ethernet cable.

My wifes 2010 MBP computer with 8GB RAM using about 6.4GB, running High Sierra and Firefox 115.24.0 (esr) seems not to have the problem at all.

Firefox will show something in the lower left corner, "connecting to..." or "loading..." etc. It can stall with either status.

Search engines would be StartPage or DuckDuckgo. With DDgo, sometimes it just spins forever, but if I click on the URL bar, it drops down another line with the same URL and "--Visit" appended. Sometimes that will load, but seems random.

Some URLs / links open in a few seconds, some spin forever.

I first called Verizon Tech support on May22 about problems (see full exchange of repeated calls & new trouble tickets below). I think, IIRC, this happens to be shortly after I upgraded my Firefox version. They have admitted to PINGs not returning, packet loss, no excuse for the Latency.

I do have a lot of pages/tabs open; Activity Monitor says my memory use is about 14GB, but the Memory Pressure stays low in the green. I also run Thunderbird, TextEdit, maybe Adobe Reader and Excel. But even when I close everything else, the non-loading issue persists. When I shut down Firefox, the memory pressure can go into the red and take a very long time (so I always shut down all other apps first). A recent shutdown stalled & I ended up losing many open pages/tabs, but even the slimmed down load has the same problem.

I have shut off the AddOn NoScript, but the problem persists.

FILE: verizon DSL tech support WED 21MAY25 glacially slow web page connection

800-837-4966 AGENT DSL tech support

failing the PING reset my IP address still fails PING

trouble ticket MDHM03KR7A

2-3 working days for networking team to resolve

THUR 22MAY25 call back from networking guy. they raised the speed to 13.4 but latency still 28, he says should be 15 max. Asked him to optimize by reducing download speed. will call back later or tomorrow.