Hello, since months I have problem with automatic launch of Firefox on my computer, It's really insupportable. I'm ready to abandon firefox. I'm on windows 10 and I use Firefox 83. There is 3 different sessions on my computer and only one has the problem.... my session. Firefox launch a new windows always and regularely, when the computer start, and all the time during the use of my sessions. If i'm already on Firefox, a new windows open's.... If I close this one, few second after an other open's..... If I put this one on background, about 1 min after again an other open's. Like this always and indefinitevely. Whatever my use of the computer or the site to visit. Even when I don't use internet and use other software to work, Firefox starts up and goes in front of my software. If I let my session opened and I do nothings, after a certain time a lot of firefox windows are open. You can easily understand why I say that It's really insupportable... and this only with Firefox on my session. My computer is protected with antivirus, and I did a full scan several time, I also tried with an other antivirus software. I used 2 softwares for detect malware... Nothing. I try to uninstall and reinstall Firefox, but the problem still the same after reinstall. I already set the "toolkit.winRegisterApplicationRestart" on "false" but firefox start alone again, again, again... Does anyone has an idea of what is the problem and what I can do ? Thanks.