Firefox 技術支援討論區

Firefox removes the exceptions after every update and they have to be manually re-added. This is a very frustrating user experience. Can you please help me identify if this is an issue with Firefox that can be updated or is it an issue with some setting I have setup.

Exceptions that get reset - Cookies and Site Data, Pop-ups, Add-ons, etc.

Permissions that get reset - All of them Location, Camera, Microphone, etc.

• Side note, the Troubleshooting Information section below has a link to share data, that link does not open in a new window. It opened in this same window, erasing all the content I had typed up the first time.

I am having the same issues as the person in this thread, but unlike their situation, firefox has not fixed itself out of nowhere. https://support.mozilla.org/en-US/questions/1104044

Everything in the firefox browser looks like it was stretched it out in MSPaint, while my actual OS interface and every other app/software UI looks fine. I have tried simply restarting my computer, as well as every solution in the linked thread, as well as refreshing firefox, and uninstalling/reinstalling, which only served to mess up my shortcuts on the home page. To be clear:

• Hardware acceleration is turned OFF, as suggested in any thread I've found where a resolution issue is addressed.
• setting layout.css.devPixelsPerPx to 1.25 specifically makes it almost legible. Almost. It's still incredibly grainy. Any higher even a small portion of a webpage takes up a ridiculous portion of my screen, rendering it just as unusable.
• In messing around in config, I found that setting gfx.color_management.rendering_intent to 5 helped, in so far as it sharpened things up a little, but it did not FIX the issue. Any value above 5 seems to have zero effect or change.
• Absolutely EVERYTHING else except firefox looks absolutely fine. It is ONLY firefox that is having this issue of all the applications/interfaces on my computer.
• Everything in firefox is affected- images, text, the tabs and address bar, bookmarks bar, absolutely everything.

Every few hours, maybe 4 times a day, XULRunner appears and tabs me out of everything. It says "This profile was last used with a newer version of this application. Please create a new profile."

There isn't a 'create new profile' button. I already made a new profile as well, but it did not fix the problem.

I recently changed to the newest ESR, 115.10.0esr, to fix streaming issues.

Out of nowhere, my cursor speed in Firefox has slowed to a truly unusable crawl. I refreshed a page and it was suddenly inching along at worse than a snail's pace. I'm using a USB trackball mouse. This is only affecting Firefox; no other applications have this issue. Using Windows 10.

Here's what I've tried so far:

• Restart Firefox
• Started Firefox in Safe Mode
• Restart computer
• Create a new profile in Firefox
• Check my mouse's firmware
• Try a different mouse

There was another question about this years ago, but the accepted answer about accidentally enabling a Windows accessibility feature doesn't say which feature it is or how to disable it (if that's indeed the case). The link also seems to redirect to a generic accessibility page.

I want to use the Advanced Preferences (about:config) to select 'Manual proxy configuration' setting. I have been able to set the HTTP Proxy and associated port but I am unable to find the setting in Advanced Preferences that will select Manual proxy configuration. Could someone please help. Thanks

Greetings, I am Alvimutmex. A "not supported" notice shows up each time the Mozilla browser loads a webpage. After looking through the settings, I discovered that Mozilla has to be updated. Could you please help me update Mozilla? For instance, when I attempt to open (https://phoneinsurance.us/), I get an error warning.

The 'add "outlook.live.com" as an application for mailto links' keeps popping up continuously after I click to X to delete the banner message. How do I disable it? Firefox should have a "don't remind me again" option. I do not want to add mailto links or make any changes. Thank You!

Hi I wish to have Firefox 125.0.2 and 124.02 'separate instances', not different profiles...

I already have 125.0.2 installed with various Profiles.

I found a 'few' links and they were quite 'cloudy' and also since Firefox (now) does not have the 'ask you WHERE to' install... I vaguely remember years ago, it was possible.

I do not mid doing tweaking, I also already have backups of profiles, just in case!

Thank you in advance M

PS it seems Mozilla does not want us to install multiple instances (perception)!

For years, I have used print to pdf in Firefox to generate pdf files of long web pages. It always worked. But lately, I noticed that huge numbers of blank pages are inserted in the pdf file, seemingly at random. I looked at the HTML source, and could not see anything that obviously triggers the blank pages. For example, a web page that ought to print to about 35 pages generates a file of more than 600 pages, with most of them blank.

I can use Microsoft Edge as an alternative, but pdf files from that browser strip out all the color, and are nevertheless super huge, about ten times larger than the ones from Firefox. E.g. the file mentioned above, about 35 pages, would be about 1.3 MB from firefox, and 12 MB from Edge. So getting the file from Firefox would be nice.

Is there a reason why print to pdf is behaving in this strange way, and anything I can do about it?

In recent weeks a PopUp is appearing on my Outlook.live.com Hotmail screen: "Add Outlook.live.com as an application for mailto links? There is no choice to Decline only to Add it. You can Close the link with the X but it keeps returning each time I log in.

We are cautioned repeatedly not to click on unknown links so I haven't.

Could someone please explain in "layman terms" why I am getting this, what it's for and how to stop it?

Thank you to everyone.

Basically, I copied this from an old post that I didn't understand the solution when I move my mouse to the top of the screen in fullscreen, the adressbar and tabs come up, I hate that how do I fix it

Every time I open a new tab, another extra tab opens automatically with the following address: https://0.0.0.1/

showing this message: An error occurred during a connection to 0.0.0.1.

I already re-installed Firefox but this bug keems popping up.

BTW: I did not do a d*** thing. It just started yesterday and is extremely annoying!

I had issues login to my Firefox account, so I reset my password, which cleared my data with passwords and bookmarks. I later found where I stored my recovery key and wanted to see if I can recover that data again.

Help -> About "Failed to check for updates."

This has been going on for over a week. I have downloaded and applied the installation program multiple times (>3). The problem persists. What is going on, and how do I fix it? Thanks

Even after numerous Uninstalls and a Reinstalls I keep getting this error notice when trying to open Firefox...

The application was unable to start correctly (0xc0000022)