Logitech G502. Problems with Logitech Gaming Bus Enumerator

Everyone who has Logitech G-mice knows that some additional buttons are not independent, but only emulate keyboard keys, and, as I understand it, this Bus Enumerator is responsible for this. The problem is that it suddenly stopped working for me: there is a warning about an uninstalled driver in the device manager. Reinstallation did not solve the problem. And the strangest thing is that I did not touch the system in any way, everything stopped working by itself. The situation is aggravated by the fact that I recently assembled a computer for a friend, there is also Windows 7, but apparently new and clean, and not old and crap like mine. His mouse is also G502, the latest version of Gaming Software, and it does not work either. That is, the matter is not in the age of the mouse (although the keys themselves are working, the emulator just does not work), or in the software version, or in the freshness of the system.
UPD: As I understand it, the emulator is working in the built-in mouse memory mode, but not in the game recognition mode. Not a single profile works anymore: neither the old and long-used ones, nor the new ones.