Diễn đàn hỗ trợ Firefox

Hi, In the last hour FF has stopped working completely. I made the mistake of using Ccleaner, which is probably the problem, I haven't had issues cleaning before, though I usually check the registry before deleting and don't recall seeing any entry for Mozilla (I may be wrong, though).

Firefox was working fine a couple of hours ago, but now it won't open at all, except in admin mode and then it won't open any links or tabs, not even settings. I've uninstalled FF, deleted the folder in the Programs folder, and reinstalled it from scratch, but there is no change (the one difference is that it wouldn't open in Admin after before I reinstalled it). Waterfox doesn't open either, but Thunderbird seems to work with no problems.

Thanks, Matt

You haven't provided an off switch for this "thumbnail preview image of the webpage" on my taskbar? I don't want anything dropping down from my task bar on hovering over it.

This is a new thing, that Firefox for some reason thought was a good idea. Mouse hovering on my taskbar, and have a drop down thumbnail preview image of the webpage?

Thank you all in advance...  :)

It's not that they are not in my Firefox downloads manager, which I expected. It's that I confirmed before closing my private browsing window that they were in my Downloads folder on my C drive, and when I went back after closing the private browsing window they were gone. Under "recent files" in my file browser it showed a couple of the most recent downloads and when I tried to click to open them it said they had been moved or deleted. Entering the first couple words of the file titles in the search bar in my file browser yields absolutely nothing.

This was over 30 files or so. It will be really irritating to try to find and download all of them again. Does anyone know of any way for me to get them back???

An errant setting on my backup program wrecked havoc on my FF profile. I have a backup from two weeks ago which I can go back to, but I'm trying to figure out how to get my browsing history from the past two weeks over to the restored profile.

Some options I thought about: and for clarity, the newer but bad profile is still loadable, I've mainly lost all my extension settings and stored data

• Is there any tool that would sync the entries from the newer/bad profile to the older/good profile?
• If I restore the older/good profile, would FF Sync just add back in the newer entries -- which presumably it has saved in it's system over the past two weeks?
• I believe the places.sqlite" file from the newer/bad profile is still intact. Should I just copy that to the older/bad profile?

Hi Win10 PC fully up to date. Changed my printer from a Xerox to an HP laser. In the control panel, set the HP as the default printer. MS Office prints on the HP without prompting. Firefox (134.0.2) always defaults to the Xerox. The HP is available in the drop down box. Restarting the PC or reloading Firefox makes no difference, Firefox always defaults to the (non existent) Xerox. MS Edge defaults to the HP. Any ideas? Regards - Andrew

In previous versions of Firefox (up to version 133), it was possible to automatically trigger printing of a PDF file by loading it into an iframe from a sandboxed iframe and call print. However, starting with version 134, this no longer works.

Is there any other way to automatically trigger the print dialog for a PDF file in Firefox, similar to how it can be done in Chrome/Edge (e.g., by opening the PDF in a new window and directly triggering the print dialog without additional button clicks)?

Hello,

I am hoping someone can kindly guide me about search bar settings. Right now, I have it set up so only google and duckduckgo are available and show up as options in the firefox search bar.

However, when I am on a youtube page, suddenly the search bar has a little green plus circle on the magnifying glass in the search bar, and then offers to "add search engine youtube" to my search engines.

How can I stop this from happening? It only seems to happen when I am on the youtube page, and I have adjusted settings multiple times but it continues to appear.

Thank you very much for your help and guidance.

Back in November (2024) I began noticing an absorbent number of cookies in “Manage Cookies and Site Data” (MCSD). Considering I delete cookies with fair regularity daily, this is unusual. The amount that I am seeing now, is around 190 advertising/Tracking cookies even when I only visit one or two sites. If I remove them and recycle the page and return to MCSD they are all back in storage in only those few seconds. This process can go on forever. This occurs even when I disconnect from the internet. How is this possible, where are these companies storing this stuff on my computer and how do I remove them and/or stop them from self populating? I have a Dell 64 something, running windows 10 I have Ad Blocker and Privacy Badger, along with a few others that are not security based. See Attachments

Thanks