Suddenly, in my company, explorer.exe began to turn off in several computers, what could it be?

Question

Malware

In short, it turns off, and does not appear, the desktop becomes empty ...

Answer 1

You have installed a client-bank (not online in the browser) from Sberbank. jar.
Task Manager, "File" menu, "Run new task": C:\Windows\explorer.exe
Although a virus can change
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell

Answer 2

Teach people to do Win+R >> "explorer"