Firefox Support Forum

I always keep two Youtube tabs open at all times on my computer. After a while of running, however, the site starts to get increasingly laggy, in a way that simply reloading the tab does not fix. (I am aware that this is likely a result of one of the extensions I have installed that affects Youtube's behavior, specifically SponsorBlock and Return Youtube Dislike, but I am not willing to uninstall these.) I also know of a "force reload" - pressing ctrl + shift + R instead of just ctrl + R in order to clear the cache or something.

However, whenever Youtube starts getting really slow, I instead like to do something I call "crashing the tab" - I open my system monitor, look for the current most CPU-intensive "Isolated Web Co" process, and end it. This pops up an error message in Firefox that says "Gah - your tab just crashed!" and offering me the option to restore it. After restoring it from this window, the performance is back to normal.

My question is, is this beneficial, or is it functionally identical to a normal force-reload? Is the improvement I see between this method and force-reloading the page just placebo? And if not, is there a simpler way to do it without opening a second program?

The webcam video image is being reversed or being flipped horizontally when using the latest version of Firefox. This is not happening in other browsers. I reset Firefox, but the issue still occurs. Can you advise/fix please?

when I log into wetransfer.com the file transfer box is greyed out and I cant use. It works in Microsoft edge.

Cheers, Adam

Hi folks,

I've searched, but I haven't found anything to help with this particular situation ...

I love Firefox/Mozilla Sync and I use it a lot, but I've recently had a desire/need to set up a scenario that some may think perculiar - let me set the scene ...

• Work PC running Firefox - 1 profile
• Work VDI running Firefox - 1 profile
• Work laptop running Firefox - 2 profiles (work & personal)

Mainly for the sake of sending tabs to the appropriate Firefox profile on the laptop, I want/need to be able to config things in Sync to treat those 2 profiles as being different entities. Currently, it appears that all profiles on a device (or within the same user profile on a Windows computer) are treated as the same entity by Sync.

Any ideas on how to achieve what if trying to do? Is it possible with Firefox/Mozilla Sync?

Thanks for your time.

BTW., for clarity, if it matters, the devices listed above are all Windows. FWIW., I also use FF on Android and Linux ... and MacOS.

I am replacing a ten yr. old Dell Desktop with a new HP Laptop. Can you please let me know how to get the new laptop working with my existing Firefox (v125.0.3) with current add-ons, extensions and settings? Thank you for your time !! Rick Perry

When I open a new tab, I can't automatically start searching anymore.

Here's a video: https://www.loom.com/share/ebcc8685187a4e2284cf40b75f7e134e?sid=9b0a3db3-fcac-4bae-9ff9-cdbe2b8b955b

Now, I have to click into the search bar to type. That's annoying.

Anyone know how to fix this?

Hey there, I had two windows in firefox open, one of which had a lot of tabs. I was using firefox on my surface pro, and then got up to get a snack. I came back, and the window, which I had been using for some time, was gone. The other window was still open, and firefox had not been closed. I thought I would just open it up by restoring recently closed window, but it was gone. I routinely clear my history, but even tabs that I just had open 5 minutes ago are missing from my history, like I never opened them in the first place. What is going on?

I try to sign-in to my KP.org account and I get a white page with the message (Firefox has detected that the server is redirecting the request for this address in a way that will never complete. This problem can sometimes be caused by disabling or refusing to accept cookies.) I called KP and they said there was nothing wrong with their site. I added the URL to the cookies exception list with no result. I tried to paste the exact URL of the sign-in page into my bit-warden and it said it exceeded the 1000 character limit. I can sign-in on Chrome, but I prefer to use Firefox. any ideas?

I have a number of music clips I want to put in one or more playlists to use with VLC Media Player. How do I create such a playlist? (If I'm asking in the wrong place, I apologize.)

I accidentally ticked the "don't allow [site] to show new windows" (I'm browsing in Spanish, forgive me if this isn't how it's written) box and now one of the functions of the site stopped working because it requires the user to confirm their decision via the pop up window. I'd like to know how to revert this. I've given the site special permissions for pop ups and it hasn't worked.

Help please.

I had to factory reset my laptop (or rather, an IT support person took over my machine and reset it before I could back up things properly!). I was not able to restore my previously opened tabs (there were a lot, like >100). It appears that all of those tabs still are showing on my mobile version of firefox as 'synced tabs'. Is there a way to pull that sync information from my phone to my laptop? If I press on "synchronise tabs" will the phone receive my laptops current tabs (not what i want), or will it update the laptop (what i do want)?

Thank you.

125.0.3 (64-bit)

I am always having this problem of losing all of my open tabs. I am sure I am not the only person who has many parallel task running. Then, for whatever reason, the browser crashes, and in opening the browser, the single "Restore Previous Session" button is the only lifeline back to all of that work.

Would it be too much to ask for a simple session restore feature that is indexed to history? So we could go back to yesterday's session, or last week's, and not lose so much.

This loss of ongoing work happens to me 2-3 times a year, and amounts to untold losses of time, effort, and money.

Ever since Firefox browser updated, my Home (specifically Shortcuts) has been glitching.

They do not show up, no matter how many rows I add or subtract. Web search and Recent activity still works (to an extent) but Shortcuts? Never again. Please fix it ASAP.

When accessing my site (in attachment to avoid indexing), Firefox blocks with a "Possible security risk" interstitial. DoH requests to the configured https://dns.google/dns-query service work from an external application on the same machine as the browser, but about:networking#dnslookuptool reports the host being unknown.

Hi, Today I discovered that firefox has logged me out of every site. I checked the cookies and there were cookies.sqlite and cookies.sqlite.bak. When I delete the newly created cookies.sqlite and rename cookies.sqlite.bak to cookies.sqlite, I am logged back in to all sites and everything works fine. I notice that the cookies.sqlite.bak file is created when I go to twitch.tv. Can I check what is causing this problem and fix it somehow? I've already tried deleting the cookies just from the twitch.tv site, but that doesn't help.

OPEN PREVIOUS WINDOWS AND TABS is unchecked but upon startup firefox always tries to do this and I get an error message. Computer crashes, shutoffs, sleep mode and Firefox wants to go to my previous windows and tabs : I HAVE IT UNCHECKED FOR A REASON, I DON'T WANT TO GO TO PREVIOUS TABS.