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Hi, this is a very funny problem that I have since months (I already asked fo rsupport but with no answer): When I launch FF most of the time (95% ?) the window does not open at all or it opens with just a white window and the app does not respond even in an hour. To make it open or respond I must run another application; it was until few weeks ago an ediror (UltraEdit), then, when i disinstalled it I tested tens of other apps and finally I found that Chrome does the job. I installed Chrome as a possible aletrnative in case FF was stiill unavailable and I kept it just to do this. To summarize: I launch FF (it freezes) then I launch Chrome and immediately FF starts; I close Chrome and that's all. I'm using FF since the begining (after Netscape) and I want to use only it; until almost one year ago everything was ok. My suspect is that there are some IP ports that FF is not able to open by itself and it has to find them opened by someone else ; possibly this something stupid, but forgive me, I'm not an expert in this field. These are my info: Desktop PC: AMD Ryzen 7 Pro CPU 3.60GHz with Radeon Graphics, 16 GB RAM OS: Windows 10 64 bit FF: Version 150.03

sul mio computer firefox risulta aggiornato tuttavia quando provo ad utilizzare whatsapp web si apre una schermata nella quale è scritto che è impossibile accedere a whatsapp web perchè firefox non è aggiornato

The DBUS service don't work in linux installation. I use Bazzite OS, whit firefox flatpak and when I try to export DBUS to use it in Global Menu it doesn't work. My hardware is Framework Laptop with Ryzen 5 7640U, 16GiB of DDR5 and 760M radeon graphic

i segnalibri non funziona, solo dopo l'aggiornamento ma poi torna a mandare messaggio "I segnalibri e la cronologia non potranno funzionare correttamente in quanto un file di Firefox risulta utilizzato da un'altra applicazione. Il problema potrebbe essere causato da un software di sicurezza." Non si riesce ad avere la funzionalità dei segnalibri

Da qualche tempo faccio molta fatica ad accedere alla posta di mail.tiscali.it Ho già vuotato cache & co. Su altri browser funziona perfettamente Su Android funziona perfettamente

Today I was trying to access a local HTTPS website of an embedded device (a Siemens S7-1500 PLC for the record) that is using a self-signed certificate. I immediately get the SEC_ERROR_REUSED_ISSUER_AND_SERIAL error and I wasn't able to go on (attached image #1, in Italian language). I've certainly browsed a similar PLC webserver in the past, so the fact that the device exposes a similar certificate serial number is not so strange for me, considering also it's self-signed.

The problem is that I cannot follow the instructions of the Mozilla knowledgebase here because I'm not able to identify the correct certificate of the website!

In the attached image #2 you can see that the connection is detected as not encrypted, I suppose because only the form part of the HTML that is posting the data using HTTPS while the rest is using HTTP, but I'm not sure. If I click on the padlock icon (attached image #3) the info about the current certificate is not displayed.

Then I went into Tools > Options and searched for "certificates"; as you can see in the attached images #4 and #5, neither in the Servers tab nor in the Authorities tab I can find any item that is related to 192.168.10.2 (the webserver IP address) or Siemens (the embedded device manufacturer). But unfortunately the error persist! Initially there was a 192.168.10.2:443 line in the Servers tab and I removed it and restarted Firefox, but it didn't solve, so at the moment the situation is the one depicted by the attachments.

I had to use Microsoft Edge to access the website, but I would like to solve this issue and use Firefox instead. Is there anything else I can do to bypass the error? Why doesn't the error page provide a way to correctly identify the wrong certificate using its fingerprint and/or name? Or, maybe, is there a way to disable this check for local IP addresses or for items in a whitelist?

Thanks for your help.

se non è possibile eliminare i 3 o 4 quadretti di pubblicità che appaiono all'avvio sulla destra dello schermo cambio browser anche se mi sono sempre trovato bene con questo.....se non risolvo il problema entro una settimana passo crome CORDIALI SALUTI A TUTTI