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I accessed the about:support page as part of attempting to diagnose a fix irregularities with logging of history entries. After at most 2 seconds the screen repeatedly began flashing to a black screen. The screen would stay black for up to 10 seconds then clear for maybe 1 to 2 seconds and then blackscreen again repeatedly. It did it on several consecutive occasions so is no one-off

Similar problems occur with Amazon Prime and Spotify but the black screen last significantly longer (over a minute or more) and the cleared screen shorter (milliseconds).

On no occasions have I seen anything that resembles and error message or code.

I restarted Firefox in safe mode loading about:support again with no other tab loaded and it continued to happen. It clearly is not a add-on or extension that is responsible. Sometimes shutting down Firefox (if you can see the screen long enough to do so) clears the problem but not always. Equally switching windows using <ALT><TAB> can relieve the problem but only on some occasions. I've not identified which applications might relieve the issue in such circumstances but suffice to say were I to return to the problem web page it would begin again.

Trying to reset the video card (Windows key Ctrl Shift B) has no effect.

Clearing the cache, cookies etc seems to make no difference and other temporary files

I only clear my history periodically leaving several months of entries available.

I have tried to update the video drivers on numerous occasions and been advised they are up to date on every occasion.

It occurs with hardware acceleration checked on and without it.

Reinstalling Firefox makes no difference and the black screen issues have been happening now for probably 2 years or so across multiple versions of Firefox and before today (when I used about:support which I have not used before) I had assumed it was purely down to third party sites but now having experienced these problems it's clear that at least in part Firefox is part of the problem.

It does not happen with other 'about' functions (profiles,config,processes,memory) so seems specific to the about:support function in terms of Firefox related pages.

Turning the monitor off and disconnecting the monitor from the power supply for the obligatory 10 seconds is the most certain and least disruptive way of resolving the problem. Just turning the monitor off and on again without disconnecting the power does not seem to resolve the issue. Obviously rebooting the system which can waste more than an hour of my time all told shutting down and bringing up software will also clear the issue. Rebooting a PC is no resolution to any software problem.

I am using an HP24i FHD monitor connected to a Dell Optiplex 7060 SFF running Windows 10 Pro Version 22H2 OS Build 19045.5487 and an up to date version of Firefox (version 136.0.1 [64-bit])

The system is regularly scanned for malware and viruses and as far as I am concerned is clean. Standard WIndows maintenance and repair tasks (eg fsck, sfc, DISM) are carried out periodically and there is currently one windows update released earlier this week outstanding.

Please can you advise what other steps I can take (or if it is a 'feature' linked to the about:support page provide a work around in your next release) to address a problem that is becoming an increasing nuisance and yet another reason to abandon Firefox whose performance is becoming increasingly flakey in a number of ways.

PS Your 'educated guesses' about software versions in the help form page are blank. Another feature?

Hello, when I am on Firefox I am unable to play audio from websites such as Reddit,Twitter and other sites but I am able to do so in youtube. This does not happen to me in other browsers such as brave/edge. Things I have tried are refreshing firefox, turning off extensions, installing windows media pack, trying a different sound device, adjusting sound mixer, allowing autoplay, update drivers. This started happening after I did a clean install of windows. Any help would be appreciated.

For a few weeks now I have been tracking down a problem with my Firefox. After using it for lets say an hour suddenly all website refuse to load ending with connection timed out message. Internet is definitely working other browsers and apps work just fine. When I close the FF and reopen it the behavior persists. Even when launching it in Troubleshooting mode the issue is the same. The only way I can get the browser working normally again is by restarting the pc (win10). This issue reappeared multiple times now almost every single day. Unfortunately I do not know how to replicate it at all because to me it appears quite random when its going to stop working. When looking at the console NetworkError: Network request failed shows up when website gives up loading. Besides other things indicating no internet connection. Any suggestion ideas how to track down what is happening when this issue pops up again?

'thunderbird' Windows 10 has been locking shortly after powerup. Simultaneously instead of updating my email, Thunderbird has been pulling down the entire mail server file. How best to recover?

Unable to watch on YT ESL spirit v EF CS2 as memory usage constantly going up until pc almost locks up. Had this issue a few weeks back and it was the chat however now disabling chat makes no difference.

Nm tried disabling Ublock origin and it's fixed, left this there as it might be useful to you guys

In the past week or so I have noticed that some emails disappear from one inbox on my Windows 10 PC. I have three Thunderbird accounts (call them A, B, and C), and the emails only disappear from box A. It seems completely random, and furthermore they only disappear on my own PC. My husband has an identical set-up on his Windows 10 PC, which also includes the boxes A, B, and C, and the messages do NOT disappear there. I can also see them on my iPhone and two iPads, and they do not disappear from those. I have tried forwarding them to myself from my phone, and while most of them did show up in the A inbox on my PC, I have noticed that some of them have now disappeared again.

This is incredibly frustrating, because I do most of my work at my PC. I thought I needed an update, but TB says I am up to date (128.8.0esr (32-bit)). It can't be anything to do with the server, because it is so specific: one inbox on one PC only. There doesn't seem to be any special pattern--some have attachments, some don't.

Many thanks for any suggestions!

Hello,

I have a problem with Firefox - Windows 11.

I can open only 2 Tabs in Firefox, the next Tabs 3 or 4 don't start, because there is a crashreport.

Please help. thank you.

the new update is causing havoc. it keeps crashing pages which in turn is crashing my computer. i will have to resort to using chrome until it is fixed because i can't do anything.

Please assist or advise why Firefox seems to be slowing down my system by memory usage. I have a handful (6) of tabs open on 1 browser session and my system started slowing down so I checked my task manager and it shows that I have more than a dozen of Firefox instances open chewing up almost 90% of my memory.

Please assist or advise me on how to tweak my browser to perform better, and not to show ghost instances

In the past week or so I have noticed that some emails disappear from one inbox on my Windows 10 PC. I have three Thunderbird accounts (call them A, B, and C), and the emails only disappear from box A. It seems completely random, and furthermore they only disappear on my own PC. My husband has an identical set-up on his Windows 10 PC, which also includes the boxes A, B, and C, and the messages do NOT disappear there. I can also see them on my iPhone and two iPads, and they do not disappear from those. I have tried forwarding them to myself from my phone, and while most of them did show up in the A inbox on my PC, I have noticed that some of them have now disappeared again.

This is incredibly frustrating, because I do most of my work at my PC. I thought I needed an update, but TB says I am up to date (128.8.0esr (32-bit)). It can't be anything to do with the server, because it is so specific: one inbox on one PC only. There doesn't seem to be any special pattern--some have attachments, some don't.

Many thanks for any suggestions!

Dear support team, I've the following issue with calendars in Thunderbird. Was on latest ESR version, an upgrade to latest version 136.0.1 (64 bit) didn't fix it: When I started Thunderbird, suddenly most of my calendars where no longer visible. I figured out by trying to add a new calendar it only (re-)appeared when "offline mode" (caching) was disabled. After changing the setting calendar.registry.[id].cache.enabled to "false" the calendars showed up again.

Could it be some kind of bug or could the calendar storage be corrupt? How can I fix it?

Many thanks in advance for an answer!

Kind regards, H. Bruecher

Hi. The "Thought-Provoking Stories" are not loading on my Firefox home page. The heading is there, and it looks like Firefox is trying to load them, but they stay blurry. Anything I can do? I'm in Canada if that makes a difference.

Please help me. Firefox disappears when I open a second app on top of it (i.e. MS Word or Mac Mail). Full screen is not selected. If I put Firefox in split screen (which is not what I want), there is no option to open a second app in other half of screen.

I'm using MacOS Ventura 13.7.4

/edit: moved thread from Firefox for iOS to Firefox section as you have macOS.