Firefox Community Forum

I've used Firefox for 20 years through the various iterations of Windows, and have been using it trouble free on Windows 11 since November 2024. Two days ago, however, When I tried to open the Guardian site (www.theguardian.com) it would open very slowly and not load and of the pictures. This gradually got worse, the site taking for ever to open at all, and always with the little dot in the tab at the top left going from side to side showing it was still loading. I have tried everything I can think of. Opened in troubleshoot mode, changed DNS settings, uninstalled and reinstalled Firefox twice (one time to see if it would work normally if I didn't actually sign in to my account). All to no avail. In fact now things are worse, in that the GOV.Uk website is now giving me similar problems - and a few other sites have become slightly slow and reluctant to open as well. My internet connection seems fine, and all these sites open without any trouble on Microsoft Edge. I am NOT very good at tech, and I am now tearing my heair out as to what I can try next.

Any help wopuld be gratefully received!

Jim Luetchford

When I try and connect to a site with firefox I get a message saying "Check that Firefox hass permission to access the web (you might be connected but behind a firewall) How can I get check to see if I am behind the firewall and if so how can I get out to connect to that specific site.

When I attempt to search on Mozilla Firefox I get this message from Norton, my antivirus software provider: "We prevented your connection to rini.drorinat.com because it is a dangerous webpage:URL:Phishing" This has only happened in the last few days. I am offered no sites - just this message from Norton. How can I solve this, as Norton does not appear to offer a solution, though I have messaged them on their site.

The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

out of nowhere my firefox bookmarks no longer appear. I am getting the following msg

The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

In an attempt to fix this problem, I have done the following:

• closed the browser and re-opened it
• rebooted my computer
• reinstalled my security software
• uninstalled firefox
• Reinstalled firefox

None of these steps have fixed the problem??????

Any ideas would be appreciated!

Moderator note: This question has been edited to correct the formatting.

The site chatgpt.com demands challenges.cloudflare.com to be allowed. I visited this site and allowed cookies. Then it worked. However, the chatgpt.com site froze and when I reloaded it, I had to start all over again. This time, the request for challenges.cloudflare.com remains, even though a URL attachment is reloaded every few seconds. The same thing happens on the openai.com site and several other. I'm using windows 7.1 and ESET Smart Security Premium.

Hello!

I use a VPN when I access the web and I recently updated my OS (Mac OS Tahoe). I updated Firefox and now DNS over HTTPS (DoH) is enabled in Firefox. When I have my VPN enabled, I cannot access the web, there is some problem with DNS resolution. I have changed my Firefox DoH settings to Standard (I have also used Strict) and have typically been unable to resolve web URLs correctly. There have been a few times that I have been able to use 'Standard' DoH strictness / settings and also use the VPN successfully at the same time, but typically when I have the VPN enabled Firefox cannot access whichever 'mozilla.cloudflare' address it is attempting to use for DNS resolution.

The VPN vendor suggested always using the VPN's DNS resolver. I have done this and I still have the same problem. What should I do to ensure that I have secure DNS and can successfully use a VPN?

Thank you.

I got the new FF update this morning and noticed shortly after when i got back online a bd_config.cfg file popped up onto my desktop windows 10. I deleted it not thinking anything about it and when back online again and it popped up again in fact everytime i did this it popped up no matter what i did and went online.

It has something to do with BitDefender i figured out uninstalled bit defender re installed it no luck

Refreshed\Reset Firefox with no luck either.

I have over 100 open tabs spread over 4 Mac desktops. I can no longer access ANY of them after upgrading to macOS Tahoe 26 and installing ESET Cyber Security Pro. I've used ESET with Firefox for many years without ANY problems. But now I have to choose between uninstalling ESET and being unprotected in order to use Firefox AT ALL. Every single webpage is blacked out with the message below. ESET support says that Firefox needs to issue an update to fix this problem.

I know the sites are secure (unless something is happening that I don't know about). I just want to get onto them, especially the Christmas site. Is it to do with Bitdefender?? I hope someone can help as the letter I want to write is getting time sensitive.

I use Adguard app for Windows which causes long page loading times in Firefox due to extended TLS Handshakes. I have installed the Adguard certificate in Firefox, have turned off DOH in Firefox, etc. etc. but, the only way that I can get a page to load in a timely manner is by clicking on "reload current page" twice in Firefox. This is a delay in itself and is very inconvenient. I understand that the incompatibility of Firefox with Adguard is a known problem and am wondering whether Mozilla is working on a solution in cooperation with Adguard?

Near the top of the Firefox page is displayed:

"The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can caused this problem".

How do I resolve this problem?