Disabling the DCOM, shouldn't have any effect on whether or not you get the pop-ups.
The attempts are speculative and don't know or care if your system is up to date and not vulnerable to these DCOM attacks. So the attack doesn't know from the outside of your system DCOM is disabled.
They have stopped as quickly as they appeared, perhaps because none got through (no point in sending more) or Comodo finally came to the fore and is blocking them, so the Network Shield isn't getting in on the action.