Diễn đàn hỗ trợ Firefox

Firefox has been used to open PDFs. Suddenly, all the PDFs appear as totally black. If I hover over the tab for that PDF, it shows the little representation as normal white background. This just happened. Don't know how to correct for this.

I'm not able to solve this issue.

Financial chart does not load it keeps buffering. The same is true for twitch but videos on youtube work fine.

I'm thankful if you could help me with this one.

Is it possible to restore firefox to a previous version to recover all my data? After update, all my firefox pages, tabs, bookmarks and history have vanished. Please help me recover or restore. Thank you!

i'm on windows. Suddenly, PDF files that I open have black pages. I checked that the default setting is to open pdf files in Firefox, as always. refreshing doesnt work. Any ideas what is wrong?

I used Firefox almost since its inception. But I stopped using it when one of my games on Facebook kept asking to upgrade flash player in order to play. I know that flash player is no more and the problem likely lies with the game but I can play the game on every other browser without that message so finally I stopped using Firefox. Is there a setting I can use so that I can go back to my favorite browser and play my game with it also?

recently i came acros a problem with login to goole related services When i try to login to google it redirect me to google support without any asking about email or anything Pressing Login button redirects me to google support about cockies i clear them problem is here still

How to change home page and new tab to desired URL or any extension of Firefox desktop in 2025?

I am unable to find any way to change how my new tab should look when I click + sign or new tab is opened up on browser opening or re-opening unlike Chrome.

I hate the change of position of typing from the search bar on the current new tab to the URL bar (unseen or unheard in Chrome) that Firefox implemented without considering users who would detest it.

Using Firefox 131.0.3 (64-bit)

Why is this font so small, I have tried everything so much so that I have the about.config on my bookmark tool bar, I have tried the extensions that do not work, zoom makes everything too big, increase the font on my desk top. When I go into the about.config ....To increase the font size in the Firefox address bar, you can modify the layout.css.devPixelsPerPx setting in about:config or edit the userChrome.css file to apply custom CSS rules none of this works. as you can se from the picture the font is SUPER TINY!!! I have changed the setting on my computer for the desktop also and nothing.

I can't upload videos to YouTube via Firefox. Uploading progress stays on 0%. Using the Edge browser videos upload normally. It has always worked with Firefox previously.

In Firefox, and Firefox only, in every version for the last several months, I have found it impossible to get Firefox to allow websites to "remember this device", even when I check that option. Every day I log in to a website, for example Tmobile, and I have to get a code emailed to me. I check "remember this device so you won't need a code next time", but the next time I log in, the same thing happens. Over and over with many sites. This does not happen with any other browser, except Firefox. How do I get Firefox to allow me to save my info? I really don't want to use Chrome, Safari, Brave, or Edge, but I do not have this problem with any of them. Only Firefox. And yes, I've checked my settings, and everything I can see says Firefox should be saving this info.

I often receive a 403 error when using Firefox Every time, before this happens, I get the unsafe website warning and then the 403 error when I continue anyway

I am using the latest version at the time of writing These errors only occur on my desktop PC I have tried to replicate this issue on both my phone (Android) and another laptop(Windows 11) but all the websites work normally on there.

I have tried the following, none of which have any effect:

• Clearing cookies
• using Troubleshoot mode
• Restarting
• Changing Useragent
• Using "Forget about this site"

The following do fix the issue

• Using a VPN
• Using Google Chrome
• Running Firefox in another profile

Going through the privacy and security tab and reseting all the settings sometimes works but only temporarily

The following are a few websites where the issue occurs

1. https://kdice.com/
2. https://latinitium.com/
3. https://theysaidso.com/
4. https://opensource.org/
5. httpe://obsidian.rocks/