All started en April 25, 2017. Previously (a few weaks) I installed Frirefox x64 instead of FF x32. I noticed that the FF icons moved on the windows taskbar (barre des taches); in fact it was a "new icon" and when clicking it didn't open an habitual FF window but a screen with the following search address: http://www.searchinme.com/?type=hp&ts=1495649038415&z=92bc6b1890dcd2904f933f1g6zbt0o1b4g8ofqameo&from=official&uid=ST31000524AS_5VPAXF7FXXXX5VPAXF7F. It is quite difficult to suppress the "fake" application in order to install again the FF x64 version. All this happened again today and going through my PC hard drive, I discovered in the Program Files x86 folder two unwanted files with respective dates 04/25/2017 and 05/25/2017 and names Doeye and Cupduck. they both contained a Chrome application and other related files. I also noticed that a new version of Mozilla FF had been installed today, 05/25/2017 when I switched on my PC around at 10:21 am Paris time without my will. I have also to tell you that I had difficulties to make again FF x64 my default browser which didn't show in the Windows 10 Parameter screen among the available browsers. I join you the capture signaled here above. What do you think of that?