Firefox Community Forum

April 21, 2026 Tuesday

Thank you for your being here as a volunteer to answer this type of question:

IS eset.com security software compatible with Firefox Mozilla ?

Thank you,

Oliver Jeffrey

east@west.net 24/7 LA California

It's probably a security setting...for some websites I go to Log In and nothing happens. Same for say signing up for a webinar. 80% of the time now Especially if I'm following a clicked eMail...so most likely a tracker of sorts?? ChatGPT not helping...wants me to do some techy stuff.

Trouble Shooting Mode, turning off ETP off for site AND in Exclusions... In Chrome, no problem.

Running Malwarebytes and Kaspersky

I'm hoping someone else has solved this!

Thanks

Hi. I run Pop_os 24.04 linux and have run the latest updated firefox for linux and the latest expressvpn for firefox and am not able to get firefox to connect with the vpn "on". It did work a week or so back but not now. With the vpn on, firefox takes at least 15 seconds to load. I've run the troubleshoot mode and it didn't help. Are there settings on firefox that could be the issue or is it a vpn problem? Thanks

Hello,

I have just setup a new desktop computer which has the latest versions of Firefox and AVG Free.

Firefox is not working properly, sometimes not completely loading pages, images or is not loading pages at all.

If I disable the AVG Web Shield Setting “Enable QUIC/HTTP3 scanning” then Firefox behaves normally.

The build of AVG Free is 26.3.10886.974 and the version of Firefox is 149.0.2.

Regards,

fbagnato

bold textI have used Firefox for several years and it is the only browser I have on my Win 11 PC I just purchases and installed Malwarebytes Premium now I get the attached screen on banking and other daily used sites that never open When I un-install Malwarebytes software everything returns to normal Do you have any updates that correct this issue Malwarebytes recommends not using Firefox

I installed update 149 and since then, the VPN (NORDVPN) often will not start up and I have to restart the computer. If this cannot be fixed, I would like to go back to the previous version which gave me no trouble. thanks Brian

no matter what I try to search get error messages . Just started. Have used ESET security and Firefox for years with no issue till now. Did you change something? Don't get errors with MS EDGE.

Ich habe die Firefox-Einstellungen von einem alten Windows10 Rechner auf den neuen Windows11 PC mit den Profildateien übertragen, hat gut geklappt.. Jetzt hatte ich die Meldung erhalten " der Treiber cpuz419_x64.sys konnte nicht installiert werden wegen möglicher Virus-Gefährdung", als Abhilfe wurde angeboten die Ker-Sicherung auszuschlaten. Das habe ich mir nicht getraut. Als weitere Info erschien eine Seite, auf der "Windows10" unterstrichen war. Könnte das alte Profil dem Rechner vorgaukeln, dass ich Windows 10 nutze?bold text

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.

Some URLs e.g. Costco.ca, amazon.ca etc will not load. I use FF and also have Chrome, Edge that have the same problem. One must assume that it is a settings problem with my Bosgame/Ryzen7 PC.

I am wondering if it is possibly caused by FF with all the safety build into it's design.? I have tried many items regarding the situation.

Thank you BobN

Vor ein paar Tagen habe ich Esset home auf meinen Computer und mein Tablett installiert. Immer wenn ich das Internet (FireFox) öffne kommt die Warnmeldung "Sicheres Banking & Surfen ist erst nach einem Neustart des Computers voll funktionsfähig." Den Neustart habe ich bereits mehrmals veranlasst. Die Warnmeldung kommt aber immer wieder. Was soll ich machen? Bin ich beim OnlineBanking und Surfen nicht sicher?