I don't have Kaspersky, but AVG free. The problem was
winsat\main.cpp:4736: ERROR: Unable to save validated results.
probably for same error in the implementation of the driver
and the bios of Gigabyte's motherboard. I solved it updating the bios from F3 to F4 version.
Watchdog timer is a function that prevents programs from remainig locked for same error: if the program can't run for same problem, the watchdog timer terminates the program.