NS not apperas in the Notification Area Icons on Taskbar

Bonjour, since some time(maybe 1 month), the NS icon didn't not appears in the Notification Area Icon. I did a lot of try to solve this problem :

- I reinstalled the NS product 3 times

- I installed a new video driver

- i installed a malware software and scan my computer on safe boot mode

Sometime, NS appears in the Notification Area Icon but not often. I never know if it will be appears if i reboot my PC.  Also if i double-clic on the NS shortcut on my desktop, the application didn't start, nothing happens. It's strange because it seems that the process NS.EXE is always be there in the taskmgr. Am I protected anyway? I have Windows 10 number 14393. Sorry for my english. 

Alain