What I'm saying is it's most likely unrelated to FF4 since it's being used in the winlogon process. Uninstalling and reinstalling might fix it temporarily but something is altering your system in a bad way. You need to rule out malware first.
Have you downloaded and installed anything recently that wasn't from a retailer?
You are right. I need to find the process doing it first.
It happened first time after installing EASEUS Todo Back up installation. I uninstalled it though (no support for GPT Disks).
All my programs are safe downloads from the sites.
I have remote control and network programs, but they are safe.
I have steam. I play it online, but I don't think it can cause this.
My firewall is set to inform me any in/out activity for
every application to take permission from me, and also set to inform me for
changing any process to take permission from me.
I ran a full scan, but couldn't find anything related.
When it appears next time, I will try to find the process it is related with.
I am dealing with lots of different softwares, and also trying different softwares for my needs, but all my downloads are from the original sites or links from the original sites of the softwares. I checked both x86 and x64 Program Files folders and couldn't find any file or folder suspicious, but maybe I missed or this process is located another place, but I know all the programs installed on my computer (I uninstalled several programs I wasn't using).
I will try to do different stuff next time it appears and will inform (Not every restart it is happening, but even happening just sometimes is enough to annoy, and enough to know that there is a process going on that I don't know about).
Can it be a FF plug-in such as "close tabs to the right"?
But what does it have to do with winlogon.exe?
Anyway, I will inform...