Diễn đàn hỗ trợ Firefox

I've started getting Virus/Trogen warnings from McAfee popping up every few seconds on Firefox. There was a McAfee file on my Acer desktop but Not installed. Windows Defender and Malwarebytes do not detect a Virus or Trogen. Is this a SCAM by McAfee to get money from me? I cannot delete the McAfee install file as it says it is in use!

John Jenkins

a website im using is trin to call an api with referer header and policy of "origin-when-cross-origin", but firefox overides it to "Same Origin Policy" with console msg: Referrer Policy: Less restricted policies, including ‘no-referrer-when-downgrade’, ‘origin-when-cross-origin’ and ‘unsafe-url’, will be ignored soon for the cross-site request

After a lot of search, i found that network.http.referer.disallowCrossSiteRelaxingDefault config setting should be set to false to allow any policy, but toggling between false or true has no affect. The request still fails with a cors error "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at..."

Is there a way to make this work? Or a way to allow the request to have this referer policy.

Error message: the bookmarks and history system will no be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

I tried following the directions in "learn more" but to no avail. Please help this senior citizen get his bookmarks back! Thank you.

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

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.

Why is my Facebook contact list missing from the right side when I log into Facebook since I added VPN and disabled VPN is this a firefox issue or Facebook issue .

I am getting notices that I need to update my FireFox. I went to update and saw this message "updates disabled by your system administrator". What do I need to do to be able to do the update. Email:[edited from community support forum]

Pandora tries to start, but it bounces from artist to artist without playing. Never had this happen before. Pandora suggests there is an overzealous ad blocker at work. Can you help?

I have been unable to access any secure sites since I installed Norton 360 Antivirus. Whenever I try to access a secure site I receive the reply: Secure Connection Failed Error: PR_END_OF_FILE_ERROR I have tried all of the repairs listed on the internet but none have corrected the fault. I have also tried disabling Norton but also without success I have also tried uninstalling and re-installing Firefox but without success Can you suggest any other methods to correct this fault

On approximately Jan 15th 2025, I was blocked from accessing my internet provider's website/my account.

I have worked with their techs on two occasions to resolve any possible issues on their end. We have determined that the problem is with Firefox/Mozilla's security, as they show no blocks on their end.

We tried with a new account, new passwords, but are still blocked. Please advise. I have enclosed a screen shot of what happens when logging in.

I have a whole mountain of Mozilla/Firefox URLs blocked in Pihole. Unfortunately, that is apparently necessary to protect my privacy and not have to install forced updates every day or two with a mandatory restart of my browser included.

To my great surprise, I see that the last 2 updates just came through. The first one I can understand becuase I had Pihole open for test_purposes. But that is closed and this morning I got another one. Has the update_procedure changed? Are the IPs hardcoded or is DOH being used to get past my firewall?

If so, I need the ip addresses because I don't have the time to go put a Wireshark on it. Unfortunately then Mozilla will also show up in pfSense also. Or I choose a completely different option to say goodbye to Firefox after al those decades. Because I'm totally done with having to invest a lot of work because my browser can't behave.

Please help because I can't find it within an hour search.

Hi, I said most of it in the title. Somehow, my Firefox DisableAppUpdate policy got set to 'true' & when I try to change it Firefox says sorry "this is managed by your organization". But I'm not currently signed in to an enterprise network. This is on private wi-fi. Can you all fix this? I need to be able to manage policies like this *for my personal browser*, less is not okay. Thank you for your help.

Firefox only works properly if my VPN location is in Canada, but I'm in the US. If I switch my VPN to a US location (where I live), Firefox often does not work properly. I get news, ads, etc., that assume I'm Canadian. And often a website will not open. I need my VPN location in the US to access any site I normally do.

Here is what ion the settings page under the general tab, system has been disabled by system administrator. I don't have a administrator. I can't get anywhere using terminal. Looks like someone is controlling things. I did finally get over to my latest new email address, [edited] @protonmail.com. Do you think I will have to erase the HDrive and start over. And than who knows how that will work. What do you think ? Thanks Gary