Firefox 技術支援討論區

When I upload the photos using Mozilla they becomes less saturated. The browser changes the color of the photos itself because when you download the photo back to a computer and compare it with original one in the photo viewer, the difference is noticeable. After some research, I found advice to use the gfx.color_management.mode set to 0, it helped, but the photos after upload looks over-saturated, but only in Mozilla. In other words, the photos after upload looks over-saturated in Mozilla (the way the browser displays them) but the browser does not change the color of the photo itself as it was before, because there are no any difference if compare with originals after download to a pc. I attached an example, but did changes in the third photo on purpose just for reference, because as I said earlier, the colors of this photo are displayed normally in all other programs except Mozzila, I just wanted to show how it looks in Mozzila.

I use MS Outlook for email in the Firefox browser. Regularly when I open a long email from organisations I subscribe to the email opens near it's end, it does does not open scrolled to the start of the email. This happens randomly with various websites, it is not associated with any specific website. I reported this to Microsoft Support. At their suggestion I tried using MS Outlook in Google Chrome. I have not experienced this problem in Google Chrome. For the last 3-4 days I have used Outlook in both Firefox and Google Chrome. On each day I have experienced emails opening near their end when first viewed in Firefox but not in Chrome. I have not had even one experience of this problem in Chrome so my conclusion is the problem must be an issue with Firefox's interaction with MS Outlook. I want to use Firefox but this problem is becoming very annoying and at the moment my go-to browser for email is Chrome. I spend several hours a day on-line and normally use Firefox for my internet browsing. I have not had any problems with any website other than this scrolling problem with Outlook. I'm not sure exactly when this problem started but have been aware of it for probably 2-3 weeks. This is a random problem, I don't have any screenshots to share with you. Thanks for your help.

My Windows Task Scheduler contains an entry called "Firefox Default Browser Agent". If I delete it, it returns. If I disable it, it re-enables itself. Can't be modified either. How do I turn it off permanently?

I already have telemetry and automatic updates both turned off.

In about:config default-browser-agent.enabled is set to false

Hello, I recently used my MacBook Air to connect with a projector for a classroom presentation. The presentation was using Google Slides. I adjusted the settings to optimize the presentation--setting the navigation and bookmarks bars to hide when in full screen.

I normally use my Firefox browser in full screen mode, but have the navigation bar and tool bar visible.

I cannot figure out how to undo what I did so that my navigation bar and toolbar are visible again when I am in full screen mode. Indeed, when I move the pointer to the top of the screen to make the navigation bar and toolbar visible, I cannot move the pointer back to the navigation bar or toolbar without it disappearing again. Essentially, I need to undo full screen mode.

Thanks, jch

Since Firefox update 19.0,1 flightradar website freezes when I click on an aircraft...

Using brave browser no problems.

windows 10 laptop with windows security all updated.

Every time I try to login to my bank using Firefox New Private Window I get a message "Unable to login. Try again later." But if I then switch to Microsoft Edge browser using its private window I have no problem, no delay, in logging in. It has occurred to me that Edge is deliberately blocking or somehow delaying my login attempt with Firefox. Could this be?

For the past few days, Firefox has been freezing up. By playing around with it, I've found that it's still functioning, but it ceases to update visually. I'm not having the same issues with any other program on my PC, I don't see the icon to update Firefox, and I've restarted my PC a few times along the way.

When this happens, it's not just website contents that freeze, but Firefox's UI as well. Hovering a tab doesn't highlight it. Clicking the hamburger doesn't appear to open the menu. Etc...

If I have a video playing when this happens, I will continue to hear it, but the frame the video is on stays in place.

If I click on another open tab, it will still show me the tab it visually froze on, but if I end Firefox with Windows Task Manager & reopen it, the session saves the tab switch, so it's still taking mouse inputs. I've been able to do similar with keyboard inputs by clicking on the address bar and entering a new URL. I don't see anything as I type it, but after using Task Manager to close and reopen Firefox, the site I entered is there.

I can switch between open Firefox windows when this happens without issue, even on the same monitor, and if I pull up something else in front of Firefox and then switch to Firefox it will still display what was last visible in that Firefox window while the bug is occurring.

I have tried disabling add-ons, and actually found that disabling some of them made it happen *more* frequently, not less. Privacy Badger, Auto Tab Discard, & Ad Nauseum specifically. Switching from Ad Nauseum to AdBlock Plus or uBlock Origin neither increases nor decreases the frequency. My other add-ons, like Duplicate Tabs Closer, haven't had any effects on frequency that I can see. With all of my Add-ons disabled, Task Manager shows double the number of Firefox processes.

I tried to clear my history, but I can only select my last 1 hour of history, as clicking on the dropdown box to select another duration will cause the problem to occur & I can't see the other options in the box to select a longer option. The dropdown to select a topic for this question has the same issue.

These are some actions that risk causing the bug to start, but aren't 100% reproducible, and the list is not exhaustive:

• Trying to click & drag to pull a tab into becoming its own window or to move the tab into another window. (Firefox does not save this movement if it causes the bug, so closing and reopening it will keep the tab in the window it was already in.) This seems to work fine for some sites, but specifically tends to break if it's a YouTube tab.
• Mid-clicking to open a link in a new tab, if done on several links in a row
• Clicking on a UI element, like the hamburger button
• Right clicking on an image and selecting "copy"
• Right clicking within Firefox
• Opening Firefox

I have not seen the bug occur at any time that I was not actively providing some input to the Firefox program.

when i have any of those 2 flags set to true it opens all links i middle click from firefox-view history all the way to left since firefox-view isn't a tab. I'd rather have it force them all to the right by default instead of it thinking i am not in a tab and have no tabs open

We have 2 desktop computers, both on the same wifi internet wireless network. On 1 we can ad the Ublock Origin extension no problem. But except for only 2 times, the other computer says installation aborted because add-on appears to be corrupt. Like I said, we have gotten it to load twice but both times it disappeared and now it won’t load. I’m not sure how it can be a connectivity issue, since they both access the internet from the same source. Is it that the problem system has Window 11 and the other 10? Why would it install twice and then disappear? Note that as a test I have uninstalled Ublock and then reinstalled it no problem on the Windows 10 machine. Does anyone know how to fix this? Thanks.

For some reason my Firefox on my Mac and Windows computer won't sync even though I am using the same account. I would like my Mac to look the same as my Windows computer. I have tried logging in and logging out on both, all the basic fixes but nothing has helped.

Thanks.

- Alyssa

I've tried deleting all history, cache settings. Deleting and reinstalling Firefox. Backing up existing profiles and restarting. NOTHING except starting in Troubleshoot (Safe) mode makes a difference:

I really didn't want to make an account and synchronise.... I only use the passwords on this machine. But I do need to view them all in.

So, set that all up, synchronised...even rebooted. But still can not see my passwords? I'm logged into several sites...auto logged in every time. Just that I have forgotten what some of them are....Firefox knows? But still won't let me see or download them.

I also can't seem to find my logins.json file...but it must be somewhere as firefox has remembered all the passwords!

says 'No synchronised logins found.'

I'm also on linux here if that matters. Seems to be a bug or i'm not doing that I do need to do?

Apprantly Firefox updated last night. I still show all the names of my bookmarks but NONE of them have any information in them. Probably lost my passwords too.

Tried all the fixes shown in prior posts. This is unacceptable !

Hi there, Last night I installed some new hardware into my PC, new motherboard and CPU for example. After that, I booted up the PC, everything worked completely fine and I was able to listen to Youtube / Twitch / Spotify etc. through Firefox.

This morning I boot up the PC, everything still works perfectly and I have audio coming from all other sources EXCEPT for Firefox. I have browsed every forum already but can not find anything that relates to me. I can't set my output device, since Firefox doesn't show up in the volume mixer. The tabs aren't muted. I have restarted Audiosrv and Windows Explorer several times. I have re-installed Firefox twice. I have tried booting it in safemode. All of the above hasn't resulted in a single second of audio. I am at a loss.

Kind regards, Siem Hoefnagels

Hi,

Just installed Firefox (again) as I want to move away from Chrome/Edge. Overall I like it but having the following problems...

The 'Home' key on the top of my Thinkpad no longer functions. When using Chrome or Edge, clicking on 'Home' brings me to the top of the web page I'm looking at. Very handy.

For scrolling long pages, 'PgUp' and 'PgDn' are useful for scrolling sections at time.

But in Firefox, none of these are working properly. the 'Home button does nothing at all. I have used 'Fn+Left' and this works sometimes, other times it does nothing.

The Page Up and Down keys are hit and miss. Sometimes the Page Down button will take me to the bottom of the page, while the 'PageUp' will take me up for a section or two and then stop working.

I'd really like to stick to Firefox but this functionality is important for me and it's very annoying not having it working properly.

Any tips or help will be appreciated.

Thanks, B

I'm essentially new to the subject of containers. Forgive the awkward title, but I couldn't figure out how to concisely express what I'm curious about.

For example, hypothetically you have a 3000+ tab session, which on occasion may max out your cpu/memory with unpleasant/inconvenient consequences.

I was watching a Youtube video on the subject, mentioning that, in some ways, containers can be compared to kinda like having multiple, isolated profiles.

Is that how it works? Can I separate 3000+ tabs into 6 containers of 500 each, and expect each one of them to behave independently of the others, like 6 separate profiles, at least from a memory management perspective?

Hello, I have been a diehard Firefox user since it was still in Beta. I have been using computers personally since 1994 and professionally since 2004, doing Windows and Linux systems administration. I can and will do whatever (within limits) you need me to do to troubleshoot and resolve this issue, which is otherwise going to cause me to abandon this otherwise excellent browser, perhaps forever. The browser.cache.disk.capacity seems to work, but browser.cache.memory.capacity does not.

Why does firefox not respect the assigned values for browser memory cache (browser.cache.memory.capacity)? Is there anything I can do to limit the memory and processor usage of Firefox and its child processes? Is extension CPU/memory usage constrained by the application values? Is there a way to determine and/or limit the resource usage of extensions?

I have included a number of screenshots documenting its behavior and generated an about:memory report during "normal use". After configuring a number of system variables, I then attempted to determine its resource usage under heavy load.

Open the browser with a couple 2, 3 tabs: ~1GB memory usage Use the browser as "normal" (dozens tabs): ~2GB memory usage Open 100+ tabs from history: The CPU and memory resource usage increases until it consumes all available system resources despite configured values. After killing and restarting the process, the tabs have invisible titles in the extension and browser, and must be closed using Ctrl+W until only a few remain after which the browser can be used normally and again consumes ~1GB.

While I understand "just don't open so many tabs", under some circumstances such as poorly written websites, bugs, etc, even single sites may attempt to claim excessive resources. I sometimes run VMs and such on this machine and in order to retain a responsive system, cannot have applications consuming all of the available resources. I have found one proposed solution that uses an external application, is this the only way?

I am open to allowing Firefox to utilize more of the SSD storage (the 1GB limit was imposed for testing) and would be fine with increased slowness due to disk cache or refetching internetworked resources. However, none of the settings I have changed or attempts I have made appear to be able to limit the memory usage in any way. Additional included screenshots are linked above instead of as attachments due to number. I can share or generate additional reports to assist in troubleshooting.

Thank you! JackD

I have checked the boxes that say "Ask to save logins and passwords for websites" & "Autofill logins and passwords". I then can open a new tab and the autofill information appears however when I close browser then open again later it no longer autofills web sites and I have go back and recheck "Ask to save loging..." and it works. How to I get it to remember permanently?