Firefox 技術支援討論區

let's keep it in one thread /questions/1410262

Multiple websites in Firefox will not open on two computers.

Secure Connection Failed An error occurred during a connection to www.google.com. PR_END_OF_FILE_ERROR Error code: PR_END_OF_FILE_ERROR

Thank you, Tom McGuire [removed email from public forum]

Bonjour, depuis plusieurs semaines j'ai des bugs graphiques sur l'interface de Firefox et sur les pages web. J'ai attendu en pensant que ça passerait avec une nouvelle mise à jour mais rien ne passe. J'ai testé le mode dépannage et le mode réparer Firefox, le problème persiste.

Today I switched from Chrome to Firefox. Since I have two monitors one common thing I do is opening a new tab and then dragging it (the tab not the window) to my second monitor. But when I do this firefox freezes and the only I can do is stopping firefox via Tasmanager and starting it again. I also tried it in debug mode and the same thing happened. I can replicate 100% of the time.

I got new computer and keep getting an error message that says, "The code execution cannot proceed because VCRRUNTIME140_1.dll was not found. Reinstalling the program may fix this problem." I have reinstalled multiple times and keep getting the same message. Any advice on how to fix this would be greatly appreciated.

Whenever I try to type into duckduckgo serach box my address bar pops up and it goes into that instead of the search engine search box. I have tried to change search from address bar to search box in settings yet it still happens. Started with 89 build.

After updating to Firefox 89.0 there are no more default search engines, so searching for someting is no more possible. Clicking "Searching for default search engines" is not succesfull.

Hope someone can help, because there are not corresponding answers in the net.

My Firefox can't play any video on any websites. Youtube video keeps on buffering forever and I can't click on the play button. But preview images still shows up when I hover the mouse over video bar. This happened after I updated to latest FF version

I've tried every solutions provided by Mozilla Support: clear caches, disable extensions, uncheck hardware acceleration,.... you name it I've tried it all. Other browsers are just fine, but since FF is my main browser for work I don't want to switch to another one just for music or video.

Thank you for your support.

Some solid colours on certain webpages do not appear whilst on Firefox. The background will show up instead of the colour the image should be. I have tried to delete the cookies and cache on Firefox as well as trying Firefox in troubleshoot mode to no avail. Whilst writing this question, I have also discovered that taking a screenshot of the issue shows how the image should look as opposed to what the screen shows. Attached are some images of the issues I am facing, two images are of what appears on the screen and one image is the screenshot from the webpage which is what should have been shown. Apologies for some of the photos, I had to take a photo of the screen with my phone to show the issue. I have also closed the browser multiple times and restarted my computer, any help would be appreciated. Thanks in advance.

Starting from Firefox 88, and still in Firefox 89, the browser became exceedingly slow. Typing one line of text has a 4-5 seconds delay, and loading pages is even slower. I tried a new start, new user, refresh, etc., without success. Firefox 87 works fine on the same computer but 88 and 89 are annoyingly slow.

I run Firefox on Linux 4.19.0-16-amd64 with Debian 10, windowmanager Xfwm4, displaymanager lightdm

Any help?

M. Natiello

Since the recent update to 89.0, I've been experiencing longer than normal initial page loads from start up or wake up for my MBP. Safe mode doesn't seem to matter, and it doesn't matter if a browser window is open and a page loaded or if I'm opening a new browser window, that first page load (or reload) takes much longer than it should (up to 10 seconds to load for example, the Google home page). Once I'm past that initial page load, my browser speed is fine. I also checked Safari and Chrome on this MBE, and neither have this issue, which leads me to believe it isn't a security or some other setting on the Mac.

This started happening 2 days ago (firefox nightly) Here is a video of the issue (forgot to remove audio tracks before recording oops): https://youtu.be/Vc5ktXUw72E

Dear all, when in type the address and "enter" the page don't charge. I have uninstalled Firefox and reinstalled it, but the issue persists. I can't even open the Firefox settings. ESET Internet Security confirm that everything is ok. Any suggestions for trouble shooting ? Thank you in advance for your responses.

I'm developer and now I have a problem with select/option font-family. for example my font is Arial but when I select on select field, the options shows with another default font I have not this problem with another browsers. have you any solutions to solve this problem?

I am trying to reinstall firefox and my vpn...I have uninstall both. but having problems reinstalling Firefox...received error message 'VCRUNTIME 140_140.DLL (NOT FOUND)"

Hi, On Mozilla Firefox, while browsing to https://mozilla.org gives this exception

===========================================

Your connection is not secure

The owner of www.mozilla.org has configured their web site improperly. To protect your information from being stolen, Firefox has not connected to this web site.

This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate.

www.mozilla.org uses an invalid security certificate. The certificate is not trusted because it is self-signed. The certificate is not valid for the name www.mozilla.org. The certificate expired on Wednesday, June 23, 2021 4:44 PM. The current time is Wednesday, June 30, 2021 10:26 AM. Error code: SEC_ERROR_UNKNOWN_ISSUER

=========================================

While on browsing on Nightly, https://mozilla.org gives following certificate exception

=========================================

www.mozilla.org uses an invalid security certificate.

The certificate is not trusted because it is self-signed.

Error code: MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT

Something new is happening - there is a slow and very obstructing problem in sending emails - I can receive emails normally but when I try to reply or to send a message, a yellow bar appears telling me there is a huge content slowing my process and asks me to click 'stop' or 'wait' It now takes 15 - 20 minutes to wait to send a message This has never happened before and has been happening for two days now. Please correct this problem. Thank you

My Firefox updated last week and it was all fine cause I only used it for work. Today I wanted to open Facebook and it says

"www.facebook.com. SSL_ERROR_DC_EXPIRED"

I have googled the problem - seems I am not the only one having it - and I have tried every suggested fix but I still can not open the website and it's frankly pissing me off.

I like to decide for myself what I want to visit or not and I don't need a Firefox nanny.

Can anyony help me how solve this? Or can I uninstall and roll back this latest - but certainly not greatest - update. I also don't like the semi sheer top of the new update. I preferred it not being there.

The page opens and after few mins this is coming up and it just keeps on loading. When I click somewhere it opens the page's elements and links normally that is visible on the tab name but on screen it just keeps on loading.